Best Epic ObaMitsu Fanfics
ObaMitsu fanfics over 100,000 words. All curated from AO3 and ranked by kudos.
Top 10 Epic ObaMitsu Fanfics
Ranked by AO3 kudos. These are reader-favorite long-form ObaMitsu fics — save them for offline reading.
little bunny, why are your eyes so red?
by revanmooo
Onii-chan? he thought. Something you call your older brother. The familiar girl tried to help him up, ushering him from where he was laying down in the cold snow in front of the doorway and inside the small home where the sickly sweet smell was stronger. The girl paled as soon as she opened the dil
Demon Slayer Characters react to the future
by Lem0nShr00m
A few days after Tanjiro returned from final selection he and several other character were teleported to a reaction room by twins. Now they are tasked with watching the future.
I will always follow
by Arminiae
Different, that was the only word he could think of, different and wrong and somehow… numb. After pretending to be a beta for so long, monitoring his every step and hiding in plain sight, Tomioka Giyuu was finally on the edge of the precipice. Either he told the truth and faced the consequences, or
The Tide of Fate
by CapoBeGone
The sun rises too early during Akaza’s showdown at the Mugen train, and he retreats to the shadows before he can finish Kyojuro off. However, when Muzan’s punishment brings back his stolen memories, his world explodes into color and emotion as he tries to relearn how to be human. And it’s possible t
Wasting Your Love on Me
by peachybonsai
Giyu doesn’t know if he has a soulmate, but even so, he still loves to doodle all over his arms in the hopes maybe there’s someone on the other side. So when the silence is replaced by red ink and a sweet unfamiliar tingle, he can’t help but find himself falling in love with the stranger who’s suppo
Everchanging
by MultiGoddess
Sanemi has to take custody of his younger brother, Genya, after his father goes too far. After not seeing his baby brother for almost 4 years, can he reconnect with him? Even if he barely recognizes the boy.(Updates every other week or at least once or twice a month){Cross-posted on Wattpad under Mu
Kimetsu no Yaiba One Shots
by brinthie
Various one-shots from my tumblr account, @ink-hashira and @brinthie. Hope you enjoy! ❣️❣️
wisteria grows
by tomiokagiyu
Several months have passed since the attack on the Swordsmith Village, and Muzan has yet to make his next move—until now. When the Hashira begin disappearing one by one, they’re presumed dead. It is better than the alternative, a fate worse than death itself. But as all signs point to their former c
The Secrets We Keep
by Wisteria21
To live and die as a hashira was one of the greatest honors. Even though she couldn’t decapitate a demon’s head, Shinobu still persevered and became someone her sister could be proud of. She even managed to form an intimate bond with one of her fellow hashira during her great achievement.But that bo
Baby Hashira
by hamhugs
The Hashira gather for their annual meeting and eagerly catch up with each other. Upon Tokito Muichiro's arrival and the news of what took place in his most recent encounter with a demon, Shinobu Kocho is worried for the youngest Hashira. As it turns out, Muichiro's exposure to the demon's power lea
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Why Read Epic ObaMitsu Fics?
Epic-length ObaMitsu fanfics — over 100,000 words — are the format of choice for readers who want full novelistic immersion. These are the works people talk about for years, the ones with their own subreddits and tag clusters on AO3.
Many of the most beloved ObaMitsu fics in the fandom land in this range, because the slow build of trust, conflict, and resolution that defines the pairing needs room to breathe. Set aside a weekend (or several) and dig in.
About This List
This list of 10epic ObaMitsu fanfics spans 2,705,440 total words. Kudos range from 2,470 on the newest entries to 12,652 on the most established. 50% are marked complete — check the status flag before committing to a longfic. The most common rating is General Audiences (3 of 10 fics).
Recurring tags across this list: Alternate Universe - Canon Divergence · Angst · Implied/Referenced Suicide · Slow Burn · Alternate Universe - Soulmates.
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