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If this is the path you choose to walk… I will not interfere. But if you turn the people against you… Will you be able to function as a hero? This worries me. But if you ever get in a tight spot… I will be there.
—Genos saying he’ll always support Saitama.

Genosai is the slash ship between Saitama and Genos from the One Punch Man fandom.

Canon[]

Saitama and Genos first met when Genos was fighting against Mosquito Girl. Genos notices Saitama standing idly nearby and warns him to leave as it is dangerous, before continuing his fight, when he blasted away an attack from the monster, however, the heat and power from the counterattack was so strong that it burned away all of Saitama's cloths, leaving him naked. Saitama doesn't seem too concerned about his lack of coverage and instead comments that Genos "really saved him" and that he's quite amazing right before Mosquito Girl reappears and attacks Genos. She injures Genos enough that he almost self-destructs, but doesn't, because Saitama steps in.

Genos watched as Saitama defeated the monster with one slap, he was in awe of his power and asked for Saitama to take him in as his disciple, which Saitama agrees, not taking Genos seriously.

A week later, Genos shows up at Saitama's doorstep. Saitama is annoyed and wants Genos to leave, but Genos is persistent and ends up telling Saitama his entire life story, which Saitama has made clear he has no interest in listening. Genos credits Saitama for saving him and keeps talking until Saitama snaps at him in annoyance to shorten whatever he's saying.

Genos does shorten it, and Saitama agrees to take Genos as his disciple seriously this time. They are interrupted when some monsters from the House of Evolution burst through Saitama's ceiling. Genos goes to take out the two outside but Saitama does it before he can. More monsters appear, when Saitama is faced with of the monsters while seemingly helpless, Genos is concerned and is momentarily distracted from his battle with Armored Gorilla, they both end up defeating their respective opponents and head towards the House of Evolution.

While Saitama was annoyed by his new disciple at first, he gradually warmed up to him. He also hold respect for Genos as he's an S-Class Hero and also his overall abilities. Saitama doesn't seem too worried about Genos' body safety though, as he's almost completely destroyed in every fight. Even though that is the case, Saitama still takes care of him should be torn to shreds or just saves him from complete destruction.

At the start of the series they become roommates and officially teacher and disciple, even though that mostly comes from Genos' side. However, Saitama often gives good advice to him. Genos has an incredibly amount of respect towards Saitama, as he knows he’s surprisingly strong, but also since he saved his life. After Monster Association Arc, Saitama moves to a new smaller apartment which forces Genos to move next door, becoming Saitama's neighbour. Although this doesn't stop him from hanging in Saitama's apartment from time to time.

Monster Association Arc[]

After Saitama finds out the secret tunnel and gets to confront Orochi, the two of them didn’t got any interactions together as they were on completely different locations, until chapter 156, where Saitama was teletransported by Blast into the battlefield with the other heroes, they finally got to reunite. Garou was hunting down the whole Hero Association. Instead of fighting him, he just ignored him and went straight to check on a destroyed Genos. Saitama asks if Garou was the one who wrecked him with a notably angry face, but Genos told him he wasn’t. King arrives and tells Saitama Genos fought well, so Saitama smiles and congratulates the cyborg. Genos feels a little bit sad since he believes he didn’t become stronger, as he wasn’t able to self-destruct. The Caped Baldy says he doesn’t understand much of that topic, but puts his hand on Genos’s core and tells him that if he wasn’t able to do it, it means that his core has become stronger. Genos stares surprisingly at his Sensei’s hand, but then smiles and thanks him and Dr. Kuseno for everything. Saitama smiles back at him and bashfully blushes as he tells him he hasn’t do anything.

Later Garou and Saitama get into a fight, but Garou sends Saitama off the Earth with a massive punch, so he takes the chance to rip out Genos' core in a chance of making Saitama go all-out on him. Saitama arrives back and sees his disciple presumably killed. When Garou throws the cyborg's core to Saitama, the hero catches it. As he looks at it longingly, Saitama reflects on how Genos always managed to arrive on time while Saitama was always late, wondering if he had a hero's intuition like Genos did. Saitama gets completely enraged and attacks Garou with a Serious Punch, while he was still holding on to his disciple’s core. Blast notes that the energy from Saitama and Garou's punch had enough energy to obliterate the planet, indicating that Saitama was so blinded by anger that he'd forgotten to hold back.

Blast and his dimensional allies quickly start making a portal beneath Saitama and Garou and just as their fists collide they are transported far above the atmosphere of the Earth, arriving to one of Jupiter’s moon. When the two of them realize where are they, Saitama proclaims that he can finally let loose against someone who can withstand his full power, but as he sees his disciple’s core, Saitama tells himself he is not the least bit excited since Genos had to die for that to happen. Saitama tries to put his core inside his outfit, but later he regrets it, because if his outfit gets torn apart, the core might fall of, as he sadly watches it and decides he’ll keep a tight hold onto it. Garou suggests that they should find a way to get back to Earth but Saitama shuts him down angrily and saying that they will figure it out after he pummels him. During the fight, Saitama still keeps Genos’s core in his left hand, while with the other hand he throws amazingly strong punches towards Garou, and he’s doing all his effort to never let go the cyborg’s core no matter what.

It’s notably seen how Saitama protected the core at all costs: anytime Garou was about to strike or punch Saitama, the hero put the core near his chest to protect it from the impact, and anytime Caped Baldy was about to attack, he moved the core farther from his right hand to avoid the core to receive any damage from his strength.

When Garou and Saitama both return to Earth, Garou realizes what he has done when he sees Tareo's corpse. Saitama is surprised to learn that Garou wanted to save Tareo and asks him didn't he want to cling to the kid for support instead. Garou asks what does Saitama even know about it, but realizes that by constantly holding onto Genos' core he has been doing the same thing. Garou decides to teach a technique to Saitama which would give him the ability to return back in time and stop the hero hunter's past self from doing what he has done. Saitama copies it and manages to travel back in time to the point before everyone died from the radiation Garou emitted, and before Genos was killed. In the end, Saitama manages to defeat Garou with "zero punch".

Genos, now alive again, notices him punching Garou and soon future Saitama and current Saitama gravitate towards each other and merge into one being. Saitama loses all his memories of the future that hasn't technically happened. Confused, he wonders what has happened, but then he notices he is holding onto Genos' core and is horrified by this. Then he notices that he has a hole on his clothes right where his crotch is and he is shocked by it as well, although, Genos suddenly crashes into him. Saitama is knocked back and the young cyborg apologizes as he got carried away. Saitama doesn't seem to care since he is glad to see Genos alive as he thought he is dead because he is holding onto his core.

Saitama tells Genos about his current ordeal and Genos finds the phenomenon quite unusual. He then connects to the other core that Saitama is still holding onto to check it out. He soon gets all the recordings the core has recorded in the alternate future and learns what happened. Saitama gets worried when Genos doesn't respond to him, until he finally snaps out of it. He asks the cyborg is he all right, and Genos confirms it. Saitama still doesn't remember what happened, though Genos ends up believing that his Sensei is just being modest about it like during the Deep Sea King incident. The young cyborg ends up being smug about the knowledge that only he, and incorrectly believing that Saitama as well, know what the hero did when he leapt through time and space to save everyone and the world. When Saitama asks what he finds funny, Genos dismisses it. He then tells Saitama that he showed up just in time to save everyone like one would expect of a hero, but this just confuses Saitama and he replies that he doesn't usually make it in time. Genos insists that he really did make it in time, but leaves Saitama still confused by this.

When some of the heroes, such as Tank Topper Army, are taking their revenge on Garou, Metal Bat steps in to defend him. Saitama soon joins to agree with Metal Bat about not wanting to finish off Garou, while carrying limbless Genos with him. It's also revealed that the heroes present didn't see Saitama defeat Garou, and end up believing it to be Blast. Genos then tells Saitama that out of all of them only he has the right to decide what to do with Garou. Saitama still wonders why that is, but then notes that it seems like Garou is letting the heroes hit him, believing that he doesn't take damage until he notices that the hero hunter is bleeding.

Tareo soon appears and wants the heroes to stop bullying Garou and King backs him up by stopping everyone with his King Engine. After Bang speaks with his wayward disciple, Saitama thanks Garou for saving Genos and King from the Monster Association cadres. In the end, the hero hunter suddenly escapes from the heroes and disappears, leaving everyone else shocked or confused except Saitama and Genos. Genos believes that Garou will be a repeat offender, but Saitama tells him he doesn't believe so and to leave the rest to Bang.

After Metal Knight appears with the proper measurements for cleaning up radiation, Saitama, while still carrying Genos, tells the young cyborg that they should first go to Dr. Kuseno to fix his limbs and then go search for their old apartment from the tide pool. After Genos has been fixed, he and Saitama are comping through the tide pool area for any of their belongings and Genos suddenly finds a nice huge clam, which makes Saitama really happy, but then he says that he hopes they next find a pot and continue their search.

Songs[]

Hoshi Yori Saki Ni | Hiroko Moriguchi
This ED of the first season of One Punch Man, have lyrics that some would claim sound quite a bit like something Genos would sing to Saitama, and this is a love song.
Chizu ga Nakutemo Modoru kara | Makoto Furukawa
This ED of the second season, sang by Makoto Furukawa (Saitama’s VA in the Japanese dub), has lyrics that are speculated by some to be a reply to the first ED.

Quotes[]

Genos“Hold on! Please, tell me you name!”
Saitama“Ah, it’s Saitama.”
Genos“Please let me be your disciple!”
Saitama“Sure thing. Wait… what?”
— Saitama introduces himself to Genos.
“If I continue being a hero, this won’t be the last time someone’s out for revenge against me. I just have to believe there’ll be people in this world who appreciate all the things I do. Oh yeah, There was that guy who wanted to be my apprentice…”
— Saitama remembers Genos.
Genos“Sensei… let's go home.”
Saitama“… Alright.”
— Genos and Saitama after discussing with the citizens.
“Even if the public doesn't appreciate you, I will still follow you.”
— Genos thinking about Saitama.
Genos“Sensei… when the time came for me to self-destruct, I was no longer able to do it. Can I truly say I’ve become stronger…?”
Saitama“…? I don’t really get it, but you didn’t blow up, right? That means this part here (Genos core) got stronger too, doesn’t it?”
Genos“Sensei… it’s all thanks to you and Dr. Kuseno”
Saitama“Heh, I didn’t do anything!”
— Genos and Saitama reunite
Genos“It’s impressive how you always arrive on time, even though you’re just on foot. You truly are a hero.”
Saitama(Chapter 9 - to Genos) No, I’m usually always late.
Saitama - (Chapter 166 - to himself) No… I tend to arrive too late…”
“Uh-oh, if my outfit gets torn up, (the core) will just fall right out. I better keep a tight grip on it…”
— Saitama wanting to protect Genos’s core
Genos“SENSEI!!!”
Saitama“EEHHH!?”
Genos“Sensei! I’m sorry, I just got carried away…”
Saitama“Genos!! You scared the crap outta me! You’re actually alive!”
— Saitama is glad that Genos is back.

Fanon[]

Their alternate ship name "EggToaster" or "Egg x Toaster" comes from Saitama's egg-shaped head and Genos' arms, which has vents that somewhat resemble a toaster's slots.

In the fandom, the ship is usually a bromance or platonic, but because there is still a decent about of SaiGenos shippers who ship it romantically, the term is usually referring to the romantic pairing. In fanworks they are often depicted in a domestic lifestyle, often making fun of Saitama's penny-pinching tendencies. Fans have also noticed how Genos rarely shows his emotions or anger unless Saitama is involved, usually when someone insults or "endangers" his master. Due their age gap (Saitama being 25 and Genos 19), some fans just leave them as a friendship, and also since Saitama hasn’t show to have any romantical attraction to a gender in general.

SaiGenos is the most popular and one of the oldest ships in the One Punch Man fandom, as well as the most written ship for the fandom on AO3.

Fandom[]

FAN FICTION
Genos/Saitama tag on AO3
Saitama/Genos tag on FanFiction.Net
FAN ART
Genosai tag on DeviantArt
Saigenos tag on DeviantArt
サイジェノ tag on Pixiv
TUMBLR
SaiGenos posts on Tumblr
GenoSai posts on Tumblr
Genosai tag on Tumblr
Saigenos tag on Tumblr
Egg x Toaster posts on Tumblr
WIKIS
Saitama’s relationship with Genos on One-Punch Man Wiki
Genos’s relationship with Saitama on One-Punch Man Wiki
Saitama/Genos on Fanlore

Trivia[]

  • Genos is notably one of the only people Saitama seems to genuinely care about, and he is possibly the person he cares about the most.
  • Genos is also one of the few people who knows of Saitama's strength and became his friend.

Gallery[]

Main article: Genosai/Gallery

Navigation[]

OnePunchManLogo
One Punch Man ShipsOne Punch Man Characters
SHIPS het Electric Catfish Man x Maiko PlasmaGenobukiGenoTatsuSaibukiSaiTatsuTatsuKing
slash AmaiBatBatarouBlastVoidCharaGaroGearouGenosaiGolden Ball x Spring MustachioKingSaiMumarouSaiSuiryuSuiGarouZombieMask
femslash DobukiPsybuki
family Bat FamilyBlastatsuPsychic SistersVoid Fist siblings
friend BatKingGarou & TareoShitty Teen Squad
CHARACTERS male GarouGenosMetal BatSaitama
female FubukiTatsumaki
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