Best One-Shot SaiGenos Fanfics
SaiGenos one-shots under 10k words — a complete read in one sitting. All curated from AO3 and ranked by kudos.
Top 10 One-Shot SaiGenos Fanfics
Ranked by AO3 kudos. Mid-length SaiGenos fics — short stories under 10,000 words.
Guilty pleasure
by Omnicode
Saitama’s thoughts about intimacy between him and Genos strays into something more.
Intentions
by Omnicode
Genos comes onto Saitama with insidious thoughts in mind. How will Saitama respond?
I'm a monster
by Omnicode
All is not well with Saitama when he remembers the ominous future. Will Genos be able to help him overcome this hurdle?
Gays and Strays
by Allytr
opm cast in a college au chatfic.super unserious just made this for fun
Loving you is Cherry Pie
by PrettyPinkPrincess
Everything is different, Genos' family doesn't die in the hands of the Mad Cyborg and Saitama is already a well established hero. In Genos' heart a poison starts, it twists and fills him up completely, feelings he'd never had before, wants he was inexperienced to, something that starts good and turn
Everybody Gets Together
by SonicSonic
Because the series is coming to an end, all characters are forcefully swept up in a romantic atmosphere and paired off.
Equal And Opposite Reactions
by Jentley
Saitama is convinced to start a reaction channel by King, and of course Genos has to involve himself in this convoluted scheme to get free stuff. The audience isn't there to watch movies. No, their entertainment comes in the form of one oblivious fool and his blatantly pining student.
Part Thirteen: Curious Touch
by the_broken_bleeding_rose
A story in which Genos give Saitama a massage and gets curious <3 Can be read as a one off or as part of the series
I got a girlfriend!
by kilometer_to_cm
Someone is having a crush on Saitama despite how hesitant he is to accept it. He is on disbelief when finding out there's a girl that actually quite like him. Seeing her on break period truly makes it hard to believe. Saitama won't admit he's amused.Note: this fic is written with Saitama POV
That Stupid Sweater
by kilometer_to_cm
Saitama is unhappy with what his partner wearing right now
Find More One-Shot SaiGenos Fics on AO3
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Why Read One-Shot SaiGenos Fics?
One-shot SaiGenos fanfics — anything under 10,000 words — are the format of choice for sharp emotional payoffs, single-scene character studies, smutty interludes, and tropes that don't need a full arc to land. You finish them in one sitting.
Ideal for a commute, a lunch break, or right before bed when you don't want to start a 200,000-word fic at 11pm.
About This List
This list of 10one-shot SaiGenos fanfics spans 45,797 total words. Kudos range from 1 on the newest entries to 83 on the most established. 70% are marked complete — check the status flag before committing to a longfic. The most common rating is Explicit (4 of 10 fics).
Recurring tags across this list: Slice of Life · Masturbation · Genos is a Little Shit (One-Punch Man) · Female Genos (One-Punch Man).
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