Amaimonfan fiction

Character · 722 works

Amaimon turns up in 19 works open to everyone here. The average one runs about 11,100 words. Read any of them in your browser, save it as an EPUB, or listen to it.

Works

Some results are potentially explicit

Blue Exorcist

Opalescent

by PresidentGuppy

"...alright, what is it?" Mephisto sighs, closing the window and drawing the curtains. He didn't need anyone to see him accommodating other demons--especially ones that broke through the outer barriers as if they were paper. "Well," Amaimon begins, feeling smug, "I have initiated a courtship. With Rin."

Teen 32k words 13 ch Complete 4.3k kudos

Blood and Gore · Religion

Blue Exorcist

Redirecting Fate

by langelos

"Ah, I guess you could say I'm your older brother. Nice to meet you. From now on, please call me 'Amai-nii.'" Rin meets his first demon when he is seven years old.

Teen 18k words 12 / ? ch In progress 2.1k kudos

Blood · Family · Humor · Original Character Death(s)· +5 more

Blue Exorcist

Boozers

by inarticulateimbecile

When the two offspring of Satan were born, the Paladin was not merciful to the demonic twin engulfed in blue flames. Years later the exorcist encounters someone oddly familiar in an offbeat bar named Boozers.

Teen 75k words 23 / ? ch In progress 2.1k kudos

Alternate Universe - Canon Divergence · Angst · Backstory · Drama· +5 more

Blue Exorcist

Father Material

by Animegirl257

Satan has never tried to grow or nurture anything in his life before, but for the sake of the only person who was ever precious to him, he's willing to try just once. In a bold move that no one could have predicted, Satan possesses the body of a stillborn Rin and does his very best to raise Yukio. He's actually quite good at it, demonic tendencies and hyper-possessiveness aside. Or in which Satan is #2 dad and ends up unintentionally turning the entire world on its head. EDIT: Revisions have begun as of 1/1/2026. Re: Chapters have been revised, NEW chapters, are new.

Teen 132k words 45 / ? ch In progress 1.6k kudos

Alternate Universe - Canon Divergence · Angst · Blood and Gore · But also thinks violence is the answer· +18 more

Blue Exorcist

a chance in hell

by DragonsAndCryptids, RevlisCharm

A chance encounter with Astaroth just a few months early results in Rin discovering some secrets that no one wanted him to find out, certainly not on his own with demons whispering in his ear. Curiosity coupled with hurt and betrayal is a disastrous combination, that Rin might not be able to come back from.

Teen 97k words 14 / ? ch In progress 1.6k kudos

Angst · Awkward Flirting · Blood and Gore · Complicated Relationships· +18 more

Blue Exorcist

Sun and Moon

by Oreocat155338

Mephisto decides against sealing Rin's flames away.Instead, he takes the boy away with him.Father Fujimoto gets Yukio-Mephisto gets Rin  or does he? Or, the fic where Rin is raised in Gehenna by his father, while Yukio is raised in Assiah with Father Fujimoto.The results aren't what you'd expect.

Teen 55k words 66 / ? ch In progress 1.3k kudos

Angst · First Meetings · Follows the Manga · Fujimoto essentially becomes Rin's stepdad· +5 more

Blue Exorcist

Protect You, Always

by DayLightDove

At seven years old, Yukio promised to protect the last remaining member of his family, his baby brother. Eight years pass and he's kept that promise ever since. By being an exorcist, he can protect his brother from the demons that come to Assiah in search for him, but with his demon powers locked away, Rin knows nothing about his demon side. But the simple protection turned into a challenge when the seal on the sword of which his power was locked in weakens. Can he keep his brother safe from not only demons but exorcists as well?

General 64k words 24 / ? ch In progress 1.2k kudos

Alternate Universe - Canon Divergence · Angst · By A Lot · Drama· +12 more

Blue Exorcist

rin's blue deception

by goldenhjp

after overhearing a conversation that wasn't meant for little Rin Okumura's ears, the nine year old half-demon feels completely betrayed by his so-called father and twin brother. - in which Rin Okumura knows what people expect from him and swears revenge on Yukio, taking True Cross Academy by storm.

Teen 11k words 6 / ? ch In progress 1.2k kudos

Big Brother Amaimon (Ao no Exorcist) · Big brother Samuel (Ao No Exorcist) · Blood and Violence · Brotherly Affection· +23 more

Blue Exorcist

Gehenna

by xStrawberry_Jamx

Rin is taken to Gehenna when he is five years old by his older brother who happened to stumble across him during a meltdown. With eight older siblings, each with their own opinion on how he should be raised along with a pyromantic father, peace was never an option.Not Discontinued, just creatively dead :)

General 7.5k words 4 / ? ch In progress 1.2k kudos

Adorable Okumura Rin · And Queen · Assiah · Author Is Sleep Deprived· +37 more

Blue Exorcist

Is It Not Enough

by Featherblade

3 times Rin's nose started bleeding and one time somebody noticed.

General 1.6k words 1 ch Complete 1.2k kudos

Terminal Illnesses · Nosebleed · Pre-Slash · 3 + 1 Things· +3 more

Blue Exorcist

Meddling

by Madame_Marian

The first thing Mephisto Pheles noticed about his new sister was that she was heartbreakingly adorable. The second thing he noticed was that this was a very, very big problem. In which Mephisto and Co. slowly go mad in an attempt to subtly (or not so subtly, depending on who you ask) protect their only sister from literally everything. But especially boys. Fem!Rin

Teen 6.8k words 5 / ? ch In progress 992 kudos

Alternate Universe - Always a Different Sex · Alternate Universe - Gender Changes · But Kinda Just Fun · Female Okumura Rin· +10 more

Blue Exorcist

Lost Prince

by Tizzi (Aaelyn)

Much to his surprise Shiro awakens after his possession by Satan but at what cost? Only Yukio is waiting for him. Rin fails to free himself from the Gehenna gate and is sucked into Gehenna and Satan's awaiting grasp.Following the Manga canon where past events are concerned - spoilers ahead.

Teen 66k words 15 / ? ch In progress 930 kudos

Alternate Universe - Canon Divergence · Angst · Canon - Manga · Canon-Typical Violence· +4 more

Blue Exorcist

Daddy's Little Boy

by WildTama

In which, Rin didn't make it off the Phantom Train in time...and ended up in Gehenna. The Grigori was not amused. Satan on the other hand- "Aww, come on, smile for Daddy!" "Urusei, baka-Ossan!"*You do not have to have seen the movie to read this*

Teen 47k words 10 / ? ch In progress 894 kudos

All the Demon Kings can't get enough of Rin · Alternate Universe - Canon Divergence · Azazel and Shirou are a thing · Canon-Typical Violence· +21 more

Blue Exorcist

through rose colored glasses

by SidewaysClarinet

By some miracle, Shiro wakes up after being possessed by Satan and finds himself alive- sore, missing a few fingers, but alive. The only one who knows what happened that night is Rin himself, and he wants to take Rin's word for it when his son says that Satan abandoned his body to save it for later. However, the threads of Rin's tale are quickly unraveling, and people are becoming more suspicious. There's something not making sense about Shiro's survival, about the Kurikara, the truth of the night he was possessed. The forces of Gehenna and Assiah alike are demanding answers, and when their damning fingers turn to Rin himself, the lies begin falling apart to reveal something far darker underneath.

Teen 134k words 23 ch Complete 852 kudos

Alternate Universe - Canon Divergence · Angst · Bad Handling of Trauma · Developing Friendships· +11 more