Iida Brothers

"Ingenium is to Iida what All Might is to me."

- Izuku understanding Tenya's admiration for his brother.

Iida Brothers is the family ship between Tensei Iida and Tenya Iida from the My Hero Academia fandom.

Season One
Tensei is first introduced as a character in this episode.

After the class decides to take Tenya’s suggestion on voting to pick theis class representative, Tenya ends up with no votes as he chose to vote for Izuku rather than to vote 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 assure Izuku that it’ll be fine.

Ochako changes the subject by asking Tenya if he is rich. His expression changes to a somewhat unhappy one, telling them that he tries to change how he talks because he doesn't want to be called that. Tenya tells them that his family has been heroes for generations, and he’s the second son. He then mentions his older brother, Tensei; also known as The Turbo Hero, Ingenium. He asks them if they know about him, and Izuku excitedly says that he does know about him, letting out all the information he has about Ingenium. Tenya tells them that Tensei is a likeable hero who honors the rules and leads people. Tenya himself set his sights on being a hero because he want to be just like Tensei. However, he think that it’s still too soon for him to lead others. He thinks that, unlike him, Izuku realized the point of the practical portion of the entrance exam, so he thinks that Izuku is more suitable for that job. After Ochako points out that it’s the first time that she's seen Tenya smile, Izuku realizes that Ingenium is to Tenya what All Might is to him.

Season Two
After Tenya wins his match against Ibara in the UA Sport's Festival, he tries to contact his brother to discuss his victory. However, Tensei is off on a mission and the call goes to voicemail. Later, Tenya receives a call from his mother. He is forced to excuse himself from the Sport's Festival before the award's ceremony so he can visit his brother in the hospital.

Tenya arrives at Hosu General Hospital to check on his brother's condition. He rushes to Tensei's side, where the heavily injured hero apologizes to him for failing as a role model.

Season Five
Mashirao Ojiro takes note of Tenya's positive emotions as they head towards the Joint Training Battle. Tenya explains that he is in a good mood due to his brother's recovery. In a flashback, Tensei is seen congratulation Tenya on earning his Provisional License. He then tells Tenya the secret to improving his Recipro Burst. Tenya is then seen executing the secret in the next scene; by forcibly removing the mufflers from his legs to help them grow back stronger than before.

Quotes
"Ingenium is to Iida what All Might is to me"

- Izuku understanding Tenya's admiration for his brother.

"What would Midoriya… or my brother… do in this situation?"

- Tenya thinking how to calm down all the UA students.

"I'm a novice. I can't measure up to their standards! Be that as it may... I have to stand up! Never again! Never again will they... or my brother... leave me behind in the dust!"

- Tenya to himself, in regards to Tensei, Izuku and Shoto.

"Ingenium the Hero… will dash across the land to take a lost child by the hand."

- Tenya to Izuku in.

Fanon
The fandom appreciates the brothership and the cute admiration Tenya has for Tensei. Most fans of the Iida Brothers are very big Tenya fans, as they see his relationship with Tensei being the most important relationship in both his life and his character arc. Fans like to draw the pair together, either with Tenya as a young boy and Tensei as a Pro Hero, or with Tenya as the Pro Hero and Tensei cheering him on from his wheelchair.

Some fans like to imagine Tensei as a psuedo-father figure to Tenya, headcanoning their parents as not being particularly good people. There is a relatively popular fan theory that Tensei is actually Tenya's biological father, and not older brother.

There are currently over 200 works depicting their sibling dynamic on AO3.

Fandom
FAN FICTION

Trivia

 * The two's quirk is powered by two different kind of juices; While Tenya’s Quirk is powered by orange juice, Tensei's Quirk is powered by grapefruit juice.