IiDeku

IiDeku is the slash ship between Tenya Iida and Izuku Midoriya from the My Hero Academia fandom.

Canon
Season 1=

Entrance Exam Arc
Izuku is fanboying over Present Mic while he explains the rules of the Entrance Exam, muttering that he listens to Present Mic’s radio every week. He’s so moved and very amazed that every UA teacher is a Pro-Hero. Katsuki tells him to ‘shut-up’. After Present Mic explains the rules, Tenya asks a question, and talks about how shameful it would be if UA did a misprint. he then points his finger at Izuku, scolding him for muttering, telling him it’s distracting and then telling him that if he’s there just for a pleasure trip, he better go home.

Before the exam begins, Izuku spotted Ochako near the gate. Izuku thinks of approaching her to thank her for helping him when he was falling before. Tenya stops him before he can approach her, saying that Ochako appears to be trying to focus. He then asks Izuku what he is doing there, thinking that Izuku is taking the Entrance Exam to interfere with everyone else. Izuku quickly tells him that it’s not like that.

As the Entrance Exam starts, Tenya and the other examinees quickly run through the gate, leaving Izuku to try and catch up with them. After his One-Pointer Robot gets ‘stolen’ by Yuga and Present Mic announces that the exam will end in 6 Minutes and 2 Seconds, Izuku search for Pointer Robots. He sees Tenya kicking a Two-Pointer Robot while shouting “45 Points!”, and Izuku repeats his score in surprise.

After the Zero-Pointer Robot is released, Izuku freezes in place. Tenya can be seen running past him while looking at him, but then quickly looks away. After Izuku saves Ochako from the Zero-Pointer Robot, Tenya along with the other examinees stare at him with a very amazed or rather surprised expression.

Quirk Apprehension Test Arc
When Izuku is going to enter his classroom on the first day of school, he hopes that he won’t be in the same class as Katsuki and Tenya. When he opens the door, he ended up seeing Tenya scolding Katsuki for putting his feet on the desk and saying it’s disrespectful to the heroes who once sat at that desk. Tenya introduces himself as Tenya Iida from Soumei Private Academy, and after a few moments Katsuki and Tenya notice Izuku standing in the class entrance. Tenya looks incredibly surprised, saying “You’re…”, making the entire class look at Izuku. While Izuku awkwardly stutters, trying to form a sentence, Tenya approaches saying, “Good Morning” to Izuku. He tries to introduce himself, but Izuku cuts him off by saying “I heard!”. Tenya stops in his track, Izuku calms down for a second and then introduce himself and replies by saying; “Nice to meet you, Iida”. Tenya then asks if Izuku realized there was something "more" to the practical exam. Izuku’s face turns into a confused expression. Tenya continues talking, confessing that he had misjudged Izuku. He also admits that he hates to say it, but he thinks Izuku is better than him. Izuku mutters “Sorry, actually I didn’t realize anything”, before Ochako Uraraka appears and ends their conversation.

When it’s Izuku’s turn to throw the ball during the Quirk Apprehension Test, Tenya comments that it doesn’t look good for Izuku if he continues like this. When Katsuki replies by saying Izuku is Quirkless, Tenya gasps in surprise and replies; “Quirkless?! Are you not aware of that he did in the entrance exam?”. After Eraserhead talks to Izuku and gives him back his Quirk after erasing it, Tenya observes and says that it looks like he received some advice. After Izuku tries to throw the ball again, this time using his Quirk, Tenya and the others look surprised. Tenya notices his finger is swollen, saying so with a concerned voice. He also notices that the same thing happened at the Entrance Exam, thinking that Izuku has a strange quirk. When Eraserhead admits that he was lying about expelling the lowest ranking student, Tenya, Izuku and Ochako together makes a surprised scream while saying “What?!”.

After the test ends, Izuku walks to the gate to go home. Tenya approaches, putting his hand on Izuku’s shoulder and stopping him in his tracks. Izuku turns his head and says his name with surprise. Tenya asks Izuku about his injured finger, and then they decided to walk together. Tenya starts by telling Izuku that he was really taken aback by Eraserhead, because he didn’t think a teacher would encourage them with a lie. While Tenya is talking, Izuku thinks to himself that he thought Tenya was scary, but he’s just earnest.

USJ Arc
After the class decides to follow Tenya’s suggestion on using voting to pick their Class Representative, Tenya ends up with zero Votes because he chose to vote for Izuku rather than himself. At lunch, Izuku tells Tenya and Ochako that he feels like even though he’s been chosen as the class rep, he doesn't know if he's qualified for it or not. Ochako replies by saying he is qualified, and Tenya assures Izuku that it’ll be fine. They both admit that they were the ones who voted for him. Even though Tenya wanted to be the class rep, he trusts Izuku more to become the class rep, thinking Izuku is more suitable than he is.

Suddenly, a bell rings, announcing that there’s someone trespassing on school grounds. Izuku, Tenya, and Ochako quickly run to the emergency exit, but due to the crowded hallways and panicked students, Izuku gets separated far from Tenya and Ochako. Tenya gets pushed very close to one of the windows and he discovers that it is the press tresspassing, not a villain. Tenya tries to think about what Izuku or his brother would do in this situation. He ends up using his and Ochako's Quirks to float to a high vantage point and gather the students' attention. Izuku shouts Tenya’s name in worry, but as Tenya calms down the crowds Izuku stares at him with amazement and a sparkle in his eyes.

After all of that, Izuku confesses to the whole class that he thinks that Tenya should be the class rep after all, saying that he was able to get everyone’s attention in such a cool way. Tenya stares at Izuku in disbelief, but the rest of the class agrees. Tenya is named their Class Representative.

While at the USJ, Tenya and Izuku are separated by Kurogiri's Warp Quirk.


 * -|Season 2 =

Before the Sports Festival
The whole class is very excited about the sport festival, talking about standouts. Izuku is very amazed and commenting that everyone’s so into it. Tenya replies by asking “You’re not?”, and then stands up (He was sitting on his chair) reminding Izuku that they have enrolled there to become heroes, so of course they would get fired up. After Tsuyu commented that Tenya got a unique way of getting fired up, Tenya repeat his ask again does he feel the same, Izuku replies that of course he do.

After Tenya and Izuku got into some conversation with Ochako about why she wants to become a hero, All Might appears and asking Izuku to get lunch with him, where Izuku glances at Tenya to ask for his approval. And after Tenya nods, Izuku quickly run at All Might to have lunch with him. Ochako and Tenya is in a line to get lunch when Ochako blurted out that she wonder what All Might wanted with Izuku, and then Tenya replies by telling her that “I heard that when All Might was attacked by villains during the USJ incident, he rushed out alone to help, so it’s perhaps about that. Or the boundless power they both have are similar too, so maybe All Might has taken a liking to him.”, and then he palms his fist, changes his expression into an admiring expression while saying that Izuku is amazing.

At the Sports Festival
For the Calvary Battle, nobody wants to be in Izuku’s team, but then, Ochako joins Izuku’s team, saying that it’s good to friends to team up. Unfortunately, when Izuku tries to recruit Tenya on his team, Tenya refuses. Tenya explains that while he sees Izuku and Ochako as best friends, he also views them as rivals. Tenya chose to be in Shoto’s team because his team is stronger than Izuku’s, and Tenya promises that he will defeat Izuku’s team.

Before the match between Ochako and Katsuki, Izuku offers an advice for Ochako whereas Ochako refuses to take his help, and then admit that she feels embarrassed for relying on Izuku during the Calvary Battle and declares that she will do her best to defeat Katsuki on her own. And when the match between them happens, Tenya asks Izuku what his advice for Ochako was, and Izuku says that she needs to strike first and touch Katsuki to send him out of bounds using her quirk.

Before the match between Shoto and Izuku starts, Tenya along with Ochako and Fumikage discuss how Izuku could win the match. After the match ended, Tenya with Ochako, Minoru and Tsuyu abruptly enter Recovery Girl’s room to check on Izuku and inform him that matches has been postponed to repair the arena which Recovery Girl forces all of them all to leave so she can prepare for surgery, further worrying Tenya and the others.

After the surgery done, Izuku returns to the stands in time for Katsuki and Eijiro’s match. He’s upset that he missed both Tenya and Fumikage’s victories (Tenya won against Ibara and Fumikage won against Mina). Tenya happens upon Izuku, who congratulates him on his victory and suggests Ingenium must be proud. He tells Izuku that he tried to inform Tensei but to no avail and that he will hopefully be able to later notify his brother of further victories in the festival. After the match between Tenya and Shoto, and Tenya doing some things we didn't see on sceen, Tenya reunites with his class, greeting Ochako and Izuku with a smile until his phone rings. He pardons himself to speak with his mother, who informs him that his brother has been severely injured by a villain.

Vs Hero Killer Arc
It’s raining, Izuku walks to the school using his umbrella while muttering that it’s only morning, but he’s already tired, and he stops on his track after hearing Tenya greet him with a good morning while running, Izuku is incredibly surprised seeing Tenya wearing a poncho and rain boots. Tenya scolded him for walking so slow and saying that he’s going to be late. Izuku panicked and run with him while saying “Late? There are still 5 Minutes until the first bell” and then Tenya replies by stating that UA Students should always arrive 10 Minutes early. After they’re arrived, Izuku tries to start a conversation awkwardly, but Tenya cuts it by telling him if it’s about his brother, there’s no need to worry and apologize for worrying Izuku needlessly with a non-assuring smile and leaves. Izuku only stares at him with a concerned expression but no words.

At the end of the school day, Izuku agrees to walk home with Ochako, who notices Tenya has already left. Before they leave, All Might suddenly appears in the doorway and takes Izuku aside to inform him about his nomination. All Might discloses that his former homeroom teacher, Gran Torino, extended the offer to Izuku and that he knows about One For All. Izuku is excited to hear the news, but All Might appears to be fearful as he's reminded of his old teacher. Meanwhile, Eraserhead notices that Tenya chose a lower class offer from a hero in Hosu City.

Izuku reunites with Ochako and informs her that he got an offer. They both notice Tenya has left school already and Izuku recalls hearing about Ingenium on the news, having been taken out by the Hero Killer: Stain. On the first day of the internships, Shota dismisses the students after giving out their costumes. Before Tenya leaves for Hosu, Izuku and Ochako approach him. They advocate for him to talk to them if he's feeling helpless and asks if he's comfortable doing so because they are all friends. He affirms their friendship and walks away, changing his expression from a smile to a vengeful glare.

In a train where Gran Torino and Izuku rides to Kyushu, Izuku wonders about how Tenya is doing and worrying him, and suddenly, the train they rides got attacked by a blue Nomu. Gran Torino told Izuku to sit down and then he kicks the Nomu away. But Izuku didn’t listen and get off the train and ran away, worrying about Tenya whose internship location is there. While Izuku is thinking how and how, he suddenly heard someone calling Tenya’s name; “Tenya-kun!”. Izuku stops on his track after he heard that voice. And the voice didn’t just call Tenya’s name once, but twice.

Izuku notices that it’s actually from the Normal Hero: Manual. Manual is looking for Tenya due to the chaos the Nomu’s made. He says vocally “Why did you choose a time like this to go off somewhere, Tenya!”. Izuku thoughts to himself in disbelief thinking the fact that Tenya went off somewhere in time as dangerous as that, ‘that diligent Iida’. He thinks that it’s weird for Tenya to go off with such a major incident in front of him.

Izuku starts to collect the puzzles; Hosu City, Tenya, Hero Killer. Izuku immediately starts to run into the dark alleyways searching for Tenya. After he finds Tenya, there’s Stain and another American’s Indian-styled hero called Native. Izuku jumps between the walls and then hit Stain’s cheek with a smash. Tenya stares at Izuku in disbelief and says “Mi… Midoriya?” and Izuku replies that he’s there to save Tenya.

Stain warns Izuku that it's his duty to kill Tenya, and if the young man gets in his way that the weaker of the two powers will be culled. Intimidated, Izuku realizes that Stain is a totally different breed of villain than those at the U.S.J. and decides to send out his location information. Tenya pleads for Izuku not to get involved because it has nothing to do with him but he refuses, re-stating words he had once heard from All Might: That the essence of being a hero is meddling where they don't have to.

Back at the hospital after the fight with the Hero Killer, Tenya tells Izuku that his hand has received serious damage. Although it can be healed through surgery, Tenya states that he won't get it healed until he's become a true hero and use it as a reminder of his foolish actions. Izuku can relate and says he will do the same with his crooked hand. They make a pact to become strong together, but Shoto feels guilty that they both hurt their hands in skirmishes involving him. Shoto claims he isn't joking, but Tenya and Izuku laugh in response.

Final Exams Arc
Izuku and Tenya both try to encourage the other students who are worried for the exam to do their best.

After Momo and Tenya are done with their exams, Izuku congratulates them both on passing.


 * -|Season 3 =

Filler Episode
After the boys of 1-A do their endurance training, Tenya told Izuku to take a break and then offers Izuku a can of orange juice. Izuku thanked him and take the can, opens it, and then drink it. Tenya waits for him until Izuku asks Tenya “What?”. Tenya replies by saying that he just thought it was strange that during the entrance exams, he didn’t think he’d end up being such good friends with Izuku, Frankly, he didn’t think much of Izuku back then, and then Tenya mentions about Izuku saving Ochako.

Izuku sat down on the thing that people stands before swimming into the pool, and then replies by telling Tenya that it had always been Izuku’s dream to attend All Might’s alma-mater, UA. But when he was told that whoever was last place in the fitness test would be expelled, he thought it was over for him. Which Tenya interrupt by saying that even so, Izuku didn’t give up. And Tenya also remembers the combat training (Villain vs Hero Training, Hero Team; Izuku and Ochako vs Villain Team; Katsuki & Tenya). Tenya stands up and saying that Izuku’s methods were reckless, but Tenya could feel Izuku’s tenancity. Tenya looks at Izuku and states that he think that’s what him and Katsuki lost to. Izuku smiles and look at his balled fist while saying that he’s there thanks to the help of many different people, that’s why he need to work harder. And their conversation is being interrupted by Katsuki arriving and shouting “Of course!” while walking to them, Katsuki challenges Izuku to a fight. Izuku refuses, and Eijiro quickly put one of his arms in front of Katsuki apologizing that they’re late. But Tenya decides to hold a competition to see who can swim fifty meters the fastest. The boys go in groups, but most of them use their Quirks to reach the other end of the pool rather than swimming. Izuku swims and uses his Quirk to defeat even Tenya who uses his Recipro Burst technique.

The Disillusioned Youth
Class 1-A is severely worn out, but the pro-heroes congratulate them anyway. Izuku asks who the little boy accompanying them is. Mandalay explains that his name is Kota and he is her nephew. Izuku tries to introduce himself, but Kota hits him with a low blow and walks away. Tenya quickly rushes to Izuku, holding Izuku's weak and pale figure (Ofc its going to weaken, he got a blow on his balls), scolding Kota because he punch Izuku's balls.

The next day, the Wild Wild Pussycats told the students to cook by themselves because they'll only serve them once (The first day). Tenya excitedly says that it's important etc while the others just very tired. After he figure out how to peel the potatoes, he peels it with the Class B students. He after that scolds the Class B's for stop peeling the potatoes, Izuku and the others stares at Tenya due to the loudness

Hideout Raid Arc
At the hospital, after Eijiro and Tenya argue whether or not to save Katsuki, a doctor get into a room telling the others to go away because it’s time for Izuku’s exam. Hanta suggests them to leave and check on Kyoka and Toru. After everyone leave except Eijiro and Tenya, Eijiro approach Izuku talking about saving Katsuki while Tenya is on the way walking away but then stops on his track to listen to their conversation, and after he got enough information, he walks away.

At night, after Eijiro, Shoto, Momo and Izuku gathers, Eijiro ask Momo what’s her answer about saving Katsuki. Before Momo got a chance on replying, Tenya interrupts by shout to them and telling then to wait. Tenya successfully stole their attention, Eijiro and Izuku awkwardly saying his name weakly. Tenya grits his teeth in anger and asking why it had to be them out of all people, the one who stopped him when he acted recklessly for personal reasons (Attempting to murder Stain because the damage he caused to his brother, Tensei), ‘You two (Izuku and Shoto)’, who received amnesty with him. Tenya asks them why they are trying to make the same mistake Tenya did, Tenya thinks it’s too much.

Eijiro approach Tenya asking what he is talking about, Shoto puts his hand on Eijiro’s shoulder giving him a silent stare code. In result of Eijiro’s question, Tenya answers by reminding them that they’re still minors. UA is in a bad enough position as it is, and Tenya asks back; Who will take responsibility for their actions? Do they understand? Izuku approach Tenya quickly and telling Tenya that it’s not like that, telling him that they don’t think it’s okay to break the rules either. Only for Tenya grits his teeth and punch Izuku on his face with full emotion, making everyone else (Momo, Eijiro and Shoto) gasps and looking at Tenya in horror.

Tenya broke down and shouting at them that Tenya is frustrated too and also worried, telling them that it’s only a natural thing to feel. He’s the class representative, he’s worried about his classmates! Not just worrying Katsuki, he also worried about the others! He’ve seen his brother on his death bed, so he didn’t want the same thing happens to the other because of their recklessness. Tenya looks at them and shouts at them, asking are they saying that they don’t care about his worries. Tenya grasps Izuku’s shoulder, his harsh voice turns into a pathetic voice immediately, asking Izuku if Izuku is saying that he don’t care about how Tenya feel?

After Izuku recites Tenya’s name, Shoto calls Tenya to get his attention, saying that they don’t expect to face the villains head-on and win either. Tenya release his grasp from Izuku’s shoulder listening to Shoto’s words. Shoto continues explaining that they’ll extricate him without fighting. Eijiro adds by simplifying Shoto’s word; “In other words, covert action! That’s the way we students can fight while toing the line of the rules!”. Momo spoke up as well, she told him that she trust Shoto, but so that she can stop them if anything happens, she plan to accompany them, as well. Tenya and Eijiro blurted out Momo’s name in different ways at the same time; Tenya with a shocked voice meanwhile Eijiro with a happy voice.

Izuku said that he don’t know either, but after hearing that he could still reach, he couldn’t just sit still, and then he brought his head up continuing his sentence; he can’t help thinking that he want to save Katsuki. Tenya grits his teeth and saying in defeat, stating that since they can’t come to an agreement, he asks them to take him with them too. Which making everyone except Tenya gasped in surprise because they didn’t expect that to happen, Tenya then apologizes to Izuku for hitting him.

Momo asks why Tenya had a sudden change of heart. Tenya explains that he's only there to prevent physical combat from breaking out. Momo agrees that she will share this role and is compromising because she understands the boy's feelings. After they’re all arrived and see All For One there, Tenya holds both Shoto and Izuku in place to prevent them doing something reckless meanwhile Momo holds Eijiro for the same reason.

Provisional License Arc
After Izuku realizes that he could use his legs instead of his arms, Izuku excitedly calls Tenya, approaching him with an excited gesture asking for Tenya to teach him. Tenya is confused about what’s Izuku is talking about since Izuku didn’t specify, and also reminds him that their hero costumes haven’t been upgraded, which Izuku says “Oh yeah!” and then Ochako points out that Izuku’s face suddenly cleared up.

After Izuku's fight with Katsuki, they're punished with House Arrest, Izuku 3 days and Katsuki 4 days. The first day of the house arrest, everyone except Katsuki and Izuku got informed about Hero Work Studies, and the students is talking about it after they're back on the Height Alliance. Izuku thinks that It's only been 1 day but he already get so far behind. Tenya pops out and saying "That's what you're thinking right, Mr.House Arrest?" and Izuku replies "Don't call me that, it's mean!" and then he asks Tenya about the Internship which Tenya refuses to tell him because the teachers said so. After Izuku's house arrest is done, he apologizes to Tenya for dissapointing him


 * -|Season 4 =

Before the fight
Izuku seems bothered by the situation with Eri, as well as Sir Nighteye's prediction about the inevitable death of All Might. Tenya notices Izuku is in need and reminds him if there anything Izuku needs to talk about, he can because they're friends. He uses the same words Izuku said to him back when he was in a dark place before their internships due to the Hero Killer. Tenya's kind gesture brings Izuku to tears until he stops and tells himself that heroes don't cry, and thanks Tenya for his support. Shoto argues that sometimes even Heroes must cry before he and Tenya share some of their food at Izuku, who gladly accepts.

After the fight
After Izuku, Eijiro, Ochako and Tsuyu opens the Height Alliance door, Minoru approaches them shouting to inform everyone that “Those guys are back!”. Everyone quickly approach them except Katsuki and Shoto and asking if they’re okay, scolding, hugging, offering a cake, etc. Tenya then scolds them, saying that he know that they’re all were worried, but they needs to calm down. That a lot has happened to them, so they should console Izuku, Eijiro, Ochako and Tsuyu and let them rest quietly and continue his speech. Izuku interrupts Tenya’s speech by calling Tenya’s name, after Tenya looks at Izuku, Izuku thanked him, but it’s okay. Tenya fixes his glasses’s place, saying “Then, if I may…”, suddenly, Tenya shaking Izuku’s body violently while confessing that he was extremely worried about them, and Hanta points out that Tenya is the one who’s being the most violent.


 * -|Season 5 =

Joint Training Arc
Izuku sees Tenya's 'Recipro Turbo' move and thinks it's faster than The Jet Hero: Gran Torino's move.

Izuku enter the Height Alliance seeing Eijiro and Tetsutetsu arguing over who’s the strongest that ended up agreeing that they got their own strengths. Tenya run to Izuku to greet him and then inform him that dinner that night is beef stew, which Izuku replies with “Ooh, nice” and say that it looks like the Class B is there, too. Tenya explains that they’ve (Class B) come to socialize and discuss that day’s training.

Endeavour Agency Arc
Tenya asks Izuku if he will be going back to the Nighteye Agency, with Eijiro mentioning how Centipeder has taken over, however Izuku tells them he can’t due to how much work they have to do so they don’t have the time to take on anyone. He adds that since Gran Torino is busy too, he’s stuck in limbo so will have to wait to be assigned someone, since this Work-Study is mandatory.


 * -|Season 6 =

Tartarus Escapees Arc
Katsuki blows through into the air and admits there is so much he needs to say to him, but the only one who can withstand such intense speed is Tenya, whom he launches straight at Izuku using his Blasting Speed Turbo: Cluster. Tenya grabs Izuku's hand finally as he demands he let go, but Tenya refuses, saying that Ingenium is the Hero who will grab the hand of a lost child and that giving help that’s not asked for, is what makes a true Hero. As Izuku fully starts to break down in tears, the second user of One For All reflects about how if there was anyone who could bolster Izuku, it would be those who share his resolve, can match his pace, and are willing to run alongside him, like the entire Class 1-A. Tenya is still holding Izuku's hand even when Izuku meets his mom, Inko.

Openings/Endings
 Opening 2: Peace Sign
 * After the scene where Tenya is shown to be exercising, Izuku is the ones who become the next person shown exercising.
 * Izuku and Tenya are on the same group on the scene where the 1-A students look at each other face to face along with Ochako, Eijiro, Yuga, Mina, Denki, Kyoka, Fumikage, Minoru and Kouji.
 * After the scene that represents Izuku and Shoto’s match, shown that Tenya is running towards his enemy (Not shown).
 * Tenya is one of the people who got the ‘Cool moments flashback’ along with Ochako, Shoto and Katsuki before Izuku punch the air.

Opening 3: Sora Ni Utaeba
 * Shoto and Izuku is on the same green background before they faded into Tenya’s figure, showing slight Tensei’s figure on his glasses that resembles Tenya being helped by them after trying to do some revenge.
 * After Stain appears, Shoto use his fire to attack, Tenya is shown running and kicking, and then shown Izuku jumping from wall to walls.
 * On the end screen of the OP, Izuku is shown standing next to Tenya.

Ending 3: Datte, Atashi No Hero
 * When Izuku falls after leaving his home, Tenya and Ochako helps Izuku to get up.
 * On the scene where everyone (Class 1-A) gather up to defeat the dragon, The Dekusquad’s position is in a zig zag, Izuku appears in the first line and Tenya is on the second.

Opening 4: Odd Future
 * Tenya is one of the characters who got to show off their moves before Izuku’s hair appears to be flying (Like Eraserhead’s when he’s using his quirk)

Ending 4: Update
 * After the flashback sketch scene is done, Tenya and Ochako is shown to be standing next to Izuku.
 * Dekusquad is shown to be on a train, Izuku, Ochako and Tenya is sleeping; Izuku and Ochako put their heads on Tenya’s shoulder while Tsuyu is looking at them.
 * The next paper slide is the Dekusquad buying a bun, Tenya and Izuku is shown standing next to each other and receiving a bag of bun each.
 * Izuku is kicking the air towards the screen, his movement got freezed and then some other characters pops there with some short movement to make the background and Tenya is one of the characters there.
 * Tenya is one of the characters who run with Izuku in slow-motion.

Opening 5: Make My Story
 * Izuku is just standing in confusion and when he sees Katsuki and Tenya running past him at first, then the other students go past him and then with a push from All Might, he quickly catch up.

Opening 7: Starmarker
 * Izuku and Tenya along with Ochako, Eijiro and Tsuyu preparing for the School Festival.
 * Tenya is walking behind Izuku when they’re going to the stage wearing the School Festival shirt (Not the fancy suit)
 * Izuku is over Tenya at the end screen (Izuku is over the ‘My Hero Academia’ meanwhile Tenya is below it)

BNHA Smash!!

 * No. 5 (Before Cravity Control): Tenya is walking with Izuku along with Ochako and Katsuki
 * Appearances (Don't) Matter: Izuku thinks that it's funny how little Tenya cares about how dumb he looks
 * Tradition Trumps Sense: When Tenya is going to deliver the New Year cards to the main post office, he saw someone's purse got snatched, so he decided to just deliver it all by himself, the only panel shown is when he deliver it to Izuku's house, "Happy new year! And I'm sorry!" And explains the thing happens, Izuku thanked him and thinks "Chill out"
 * Epidemic: When Tenya arrives, Izuku, Ochako, Eijiro and Minoru makes a satisfied faces, Tenya asks Tsuyu what on earth happened to them, Tsuyu replies that she got no clue and glad Tenya is there
 * Once a Fanboy: After Tenya tells them that he's a relative of Ingenium, Izuku's reaction is more loud than in the actual show. Tenya said that "You (Izuku) ought to come over sometimes" and Izuku panicked about what he gotta wear
 * Maid for Heroes: Izuku, Tenya, Rikido and Minoru wears a maid outfit instead of a suit
 * Intimate: Izuku notices Tenya calls Tsuyu "Miss Tsuyu" and thinks "Oh! That works!"
 * A Rivalry is Born: Izuku observes about Eraserhead when he's fighting the villains in USJ while Tenya and Ochako praise him
 * Stressful Symptoms: Tenya and Izuku, along with Minoru got the 'Trembling limbs' nervous when entering the stage of the Sport Festival
 * Sore Loser: Izuku jolts when Tenya shouts "I'm ready!" when Katsuki is the one who get called
 * Master of Self Esteem: Izuku is getting brainwashed by Hitoshi and going out from the bounds, Tenya shouts at him to get to control himself, and giving him an example of himself, trying not to blush when imagining people praising him
 * Super Stubbed -> No Bones About It: Tenya and Izuku's legs are both injured duo to the same foolish actions
 * Fanboy Mode: Tenya scolds Izuku and telling him archiving projects comes later
 * Neptunida: Izuku thinks Tenya is like some sorta sea god after he rescue the manequin
 * Seeing Other People: After some talks with Tenya, Izuku said "Sorry Kacchan, I've moved on"
 * The Entire Chapter 81: Denki, Ochako and Hanta made Tenya addicted to a game, and they asks Izuku, Shoto and Fumikage for help but they ended up being addicted too. But after Denki, Ochako and Hanta become panicked and "Oh what do we supposed to do?", Tenya and the others pops out and telling them that Tenya is doing some 'Reverse psychology' tactic on them and Izuku, Shoto and Fumikage helps him
 * Total Knockout: Katsuki unitentionally broke Izuku's backbone with 'Pendulum Backbone', and while the other students panicking, Tenya shouts at them to go fetch Recovery Girl

School Briefs


School Briefs I
Tenya is gifted amusement park tickets by Native, as thanks for saving him from Stain. He invites Izuku and Shoto to join him, but both are busy that day.

School Briefs II
Tenya and Izuku sit beside each other on the bus to the summer training camp. When Shoto Todoroki is forced to move seats due to Yuga Aoyama having an upset stomach, Tenya and Izuku both offer Shoto their seats. They argue amongst themselves about whose seat Shoto should take. Later, when trying to distract Yuga, they decide to try playing a game of trivia. Tenya first asks a very difficult math question which no one can solve. Izuku then asks a very obscure All Might trivia question which, again, no one can solve.

Tenya wakes at some point in the middle of the night on one of their nights at the camp. When he wakes, he proceeds to check on all of the students. He notices that Izuku's blankets are tangled, and so he tucks him in properly.

Fanon
Fans ship this because of the closeness of their relationship, and the fact that both Tenya and Izuku are huge nerds. Tenya was one of the first people to impact Izuku and be impacted by Izuku. Some shippers tends to ship them with Ochako in a poly ship because they’re often seen together. The popularity of IiDeku isn’t as popular as the other ships, rivalling IzuOcha, TodoDeku, IidaOcha and TodoIida. IiDeku is Tenya’s 4th most popular ship and Izuku’s 13th most popular ship.

Some fans have pointed out that the handholding scene between Tenya and Izuku in season 6 mirrors the handholding scene between Katsuki Bakugou and Eijiro Kirishima in season 3. As Kiribaku is one of the most popular ships in the fandom, it stands to reason that the scene between Tenya and Izuku can (and perhaps should) be read as romantic as well. Others have pointed out that Tenya plays a very similar role in Izuku's life as Ochako does. IzuOcha is the closest ship to being canon, with a number of ship-bait moments. Fans of IiDeku argue that if Tenya were a girl or if the show were more open to slash relationships, the moments between Tenya and Izuku could be read as ship-bait as well.

There's a joke by an IiDeku shippers on Tumblr; "Ochako is trying to have a romantic floaty moment meanwhile Izuku is getting sweaty picturing the shape of Tenya's flexible body". For context: When Ochako's crush for Izuku got revealed, Izuku is training his feet for his special move. Because Tenya is the one who teach him how to kick, he thinks about Tenya while training, Ochako is floating and see Izuku training through the window.

There are currently over 1000 works for this pairing on AO3.

Fandom
FAN FICTION

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WIKIS
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Trivia

 * In the Entrance Exam, Tenya and Izuku are in the same Battle Center, Battle Center B
 * When the Zero-Pointer Robot is released, the scene where Tenya look at Izuku and then looks away while running was animated in slow motion
 * In the Battle Trial Arc, Izuku thinks that Tenya’s Hero Costume is very cool
 * In Chapter 321, Tenya is the one who grab Izuku’s hand
 * Tenya grabs Izuku his hand in Chapter 321 is paralleling Katsuki holding Eijiro’s hand in Chapter 90
 * Izuku told Eijiro to save Katsuki and Katsuki told Tenya to save Izuku
 * On the way to Training Camp, Tenya and Izuku sit next to each other on the busThe panels.jpg
 * Tenya in Chapter 320 has a similar thought to Tenya in Chapter 86; In Chapter 320, he thinks that "He's set his mind on something, he refuses to stop. I knew that well". Meanwhile in Chapter 86, he thinks that "That's right, once you decide to do something, you're unstoppable. That's what I respect about you as a friend and rival." Quite a few people believe the words in the second panel of chapter 320 belong to Katsuki. That is not the case. Those words are Tenya's.
 * Tenya is the first rival Izuku got in UA (Katsuki doesn't count, remembering that Katsuki and Izuku are already rivals since childhood)
 * Tenya thinking "What would Midoriya do in this situation" is similar to how Ochako thinks about it.
 * Tenya and Izuku's ranks in the midterms are 2nd for Tenya and 4th for Izuku, only separated by Katsuki in 3rd
 * Their birthdays are one month apart, Izuku being in July and Tenya being in August
 * In the 4th Popularity Poll (Japan) Official Art, Izuku and Tenya stare at each other
 * The ship name "Green Rice Field" is taken from Izuku's surname, Midori (緑) meaning green and Tenya's surname, Da (田) meaning rice field
 * Meanwhile, "Cooked Green Rice" is taken from Tenya's surname, Ii (飯) which is an old way to say "cooked rice" and Izuku's surname, Midori (緑)
 * The ship name "Green Heaven" is taken from Izuku's surname Midori (緑) and Tenya's name, Ten (天) which means "Heaven"
 * Tenya and Izuku's relationship is almost the same as Ochako and Izuku's relationship, the only obvious difference is Ochako has shown romantic feelings for Izuku meanwhile Tenya hasn't

Variations

 * Bakugou Rescue Squad refers to the ship between the two, Shoto, Momo and Eijiro
 * Dekusquad refers to the ship between the two, Shoto, Ochako and Tsuyu
 * OchaIiDeku refers to the ship between the two and Ochako
 * Smartsquad refers to the ship between the two, Katsuki, Momo and Shoto
 * TodoIiDeku refers to the ship between the two and Shoto
 * TodoIiDekuChako refers to the ship between the two, Shoto and Ochako

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