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Welcome to Hero School, Iruma-Kun! by rockpunkprincess
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)
02 Mar 2025
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Summary
a coffee, a hectic morning and a (not) demon.
Bookmarked by ACosmicFox
26 Jun 2026
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as all hell breaks loose (as all hells always do) by Creator_Chaos
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)
07 Dec 2025
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Summary
On some level, Iruma had believed he could face just about anything the world threw at him. A surprise encounter with Kirio tests this conviction, as Iruma’s identity is revealed and he questions his ability to keep hold of his ambitions.
(Implied to occur sometime after chapter 324)Bookmarked by ACosmicFox
26 Jun 2026
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Japanese for dummies, for demons, it's the same by Bondlessclown
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun - All Media Types
24 Apr 2026
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Summary
"[...] "There, that's your seat" Ameri indicated, sitting in one of the Student Council members' chairs. Iruma, the door to the room having just closed behind him, looked into the room with undisguised amazement. The arrangement was different than usual, clearly intentional. One of the tables used by the other student council members, usually put away as unnecessary, was now placed in the center of the room. Ameri sat on one side of the table, looking even taller on her well-made chairs, which, though modest in appearance, were more modest than the empty chair behind the Student Council President's desk. [...] "Ameri-san, may I ask what's going on?" Iruma asked, casting a fearful glance at the blackboard. Ameri didn't need to be asked twice. "Of course. Your contribution in deciphering and reading the forbidden books was crucial in helping me understand their content. But, after all that, the time has come to raise the bar" she explained, while crossing her fingers and keeping her elbows firmly on the table surface. "I want you to teach me the language of the forbidden books"
Basically Ameri asks Iruma to give human language lessons
Series
- Part 5 of Babyls
Bookmarked by ACosmicFox
25 Jun 2026
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Sighted Targets by silvershadowkit
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)
22 Jun 2020
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Summary
Azz and Clara decide to get some more information from Iruma about his past, so they can be better friends. The answers lead to questions, which only Lord Sullivan can answer.
Series
- Part 3 of Uncomfortable Truths
- Language:
- English
- Words:
- 4,331
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 67
- Kudos:
- 2,030
- Bookmarks:
- 181
- Hits:
- 20,084
Bookmarked by ACosmicFox
25 Jun 2026
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A Spoonful of Sugar by silvershadowkit
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)
20 May 2020
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Summary
The stress of living in the Netherworld finally causes Iruma to succumb to the worse of human conditions: the common cold. How do his friends and family react in this moment of crisis?
Series
- Part 1 of Uncomfortable Truths
- Language:
- English
- Words:
- 2,237
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 50
- Kudos:
- 2,086
- Bookmarks:
- 204
- Hits:
- 23,075
Bookmarked by ACosmicFox
25 Jun 2026
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A Compelling Argument by Dragonna
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun - All Media Types
07 May 2026
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Summary
"I don't understand." Murmur buried a hand in his red hair. "How did they know? How did they get this information? I never let anything slip about it in front of the students."
"What do you mean?" Ipos looked up from his copies, putting down his pen.
The redhead pouted, showing how annoyed, or rather offended, he was: "They learned that I was a fan of Gyari. How did they learn it?"
Series
- Part 2 of Dorm's Secrets
Bookmarked by ACosmicFox
25 Jun 2026
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Good Advices by Dragonna
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
31 May 2026
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Summary
“Jazz.
-Yes, Sensei?
-First, I want to apologize again for what happened during the exam. And I’d like to talk about your decisions at that time.
-I…
-Jazz, why did you invent this strategy?”Series
- Part 6 of Dorm's Secrets
Bookmarked by ACosmicFox
25 Jun 2026
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JazzLied: Sleep Well by Comet_Tail
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
05 Jun 2026
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Summary
Takes place after the beach arc in the manga.
One the bus back to Bablys Lied accidently falls asleep on Jazz. And Jazz has no idea what to do.
Bookmarked by ACosmicFox
25 Jun 2026
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Braids & Matching (Again) by shinlikesink
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun - All Media Types
21 Jun 2026
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Summary
Clara wants to match with Iruma and Azz. Properly this time. In the process, she learns to braid with Ameri.
Bookmarked by ACosmicFox
25 Jun 2026
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Actions and Consequences by Angelle_wings
Fandoms: 名探偵コナン | Detective Conan | Case Closed
06 Apr 2021
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Summary
There was very little Kuroba Kaito expected to go on in his life other than his nights conducting heists as Kaito Kid, so when he saw a familiar little boy tossed in the backseat of an unfamiliar car, it was needless to say his quiet afternoon had turned to be a little less quiet.
Bookmarked by ACosmicFox
23 Jun 2026
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Turning by Stuffymcstuffsworld
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
05 Jan 2024
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Summary
Turning into a demon is not a painless process
Bookmarked by ACosmicFox
23 Jun 2026
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Enjoy the Moment by Stuffymcstuffsworld
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
12 Feb 2025
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Summary
A tiny collection of the three grandchildren hanging out together.
Bookmarked by ACosmicFox
23 Jun 2026
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Rainy Day by Rain_Puddle
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
11 May 2023
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Summary
When it starts raining, the trio takes cover under Azz’s wings.
“I don't see why you two can't just use your own wings."
Both his friends grew silent. "... don't feel like it." Clara mumbled. She seemed distant.
Iruma didn't say anything either. If anything he looked a little guilty.
Bookmarked by ACosmicFox
23 Jun 2026
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we're soulmates, i think... by cookiescrumbles
Fandom 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)
01 May 2023
Summary
They're soulmates.
They were alone before, but now they're together, and they'll love and support each other until the end of time. ♡
(this series is a collection of my love trio fics, including lovey dovey stuff and a LOT of hurt/comfort. each character of the trio gets their own time to break—i mean shine. ^_^)
- Words:
- 7,480
- Works:
- 5
- Bookmarks:
- 41
Bookmarked by ACosmicFox
23 Jun 2026
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To be loved is to be changed by Blues_missing_toe
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
16 Jun 2026
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Summary
Iruma never learned how to swim.
Somehow, this leads to all his trauma coming out in a not so... healthy way.
Not that drowning in the first place is very healthy.
...
(Or: Iruma almost drowns, which leads to a series of conversations and trauma being unpacked. Enjoy!)
Bookmarked by ACosmicFox
23 Jun 2026
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By the Demon King’s Word by Komneid128
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun - All Media Types
21 Jun 2026
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Summary
Based on chapter 447 of Welcome to Demon School! Iruma-kun.
When Iruma’s secret is exposed and the Demon Border Patrol comes to drag him back to the human world, Babyls becomes a battlefield. Cornered, wounded, and terrified of losing the family he found in the Netherworld, Iruma reaches deeper into his greed than ever before and awakens a terrifying power within Ali-san’s ring.
But Fenrir’s attack is only the beginning. As the Misfit Class, the teachers, Opera, and Sullivan are forced to choose between law and loyalty, the truth behind Fenrir’s identity threatens to destroy everything Iruma has built. And when all hope seems lost, an impossible voice returns to the Netherworld.
The missing Demon King has one final judgment to pass:Iruma is demon enough.
Bookmarked by ACosmicFox
23 Jun 2026
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With Nature's Calm Content by silvershadowkit
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
25 Dec 2021
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Summary
A quiet moment in the greenhouse turns into a learning experience.
- Language:
- English
- Words:
- 679
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 5
- Kudos:
- 263
- Bookmarks:
- 33
- Hits:
- 1,690
Bookmarked by ACosmicFox
23 Jun 2026
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Little Iruma's adventure at Babyls by Bondlessclown
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
16 Jun 2024
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Summary
"Slowly, doubtfully, little Iruma crawled out from under the desk. His little hands clutching his own shirt, he looked fearfully first at one and then at the other demon, before taking a seat on the chair furthest from them. He had to climb up, but when he managed to sit down he smiled with satisfaction, his little hands clenched into fists above his knees. Only then did Kalego hand him the biscuits, advising him to eat slowly. The smile on the child's lips widened, his eyes lit up with wonder: no one had ever given him biscuits. He made a small bow, murmuring a thank you, took the package in his little hands, handed it to the two who refused with a nod of their heads. Finally he opened it, took one and put it in his mouth. A small moan of joy was caused by all that goodness and sweetness, the little hands already ready to grab the next biscuit as he chewed. Kalego turned to Balam "Do you understand why it is better for us to handle him for now? If the Chair-demon saw him in this condition, it would be so disgustingly embarrassing and would probably prefer to keep him as he is now."
Basically Iruma turned on his six years self.
Series
- Part 3 of Babyls
Bookmarked by ACosmicFox
23 Jun 2026
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with a heart full of love, and a hand full of scythes by softasthunder
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)
22 Jun 2026
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Summary
There are a few female demons in the Netherworld. There is this theory: It’s to prevent female hunting instincts from growing dull. So that from all the many male demons, she can find the strongest, smartest, most noble, and pursue him relentlessly until she catches him. Once decided upon a partner, she will chase him to ends of the earth.
And inevitably, she will catch him.
That pleasure is exactly what makes female demons stronger. And naturally, the more she loves her prey, the stronger she will grow.
Bookmarked by ACosmicFox
23 Jun 2026
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The Curious Case of Shichiro the Demon by PHOLADREW
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun - All Media Types
12 Apr 2026
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Bookmarked by ACosmicFox
23 Jun 2026