1 - 20 of 88 Works in Baal (Mairimashita! Iruma-kun)

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  1. Un parteneriat dintre noi 2. by

    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)  

    21 Sep 2025

    Tags
    Summary

    R

    Language:
    Română
    Words:
    2
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    14

  2. Iruma, Demon Lord Son of a Reincarnated Slime by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse  

    19 Sep 2025

    Tags
    Summary

    Iruma lived an awful life of being forced to work by his idiot and selfish parents, but after being killed by a runaway murderer fate has given him a chance to start a new life which ended up him reincarnated as a Demon Lord and the powerful slime Rimuru Tempest becoming his son with more crazy things in this new fantasy world! Iruma x Harem. Rimuru x Shizue. Lemon. Slight OP Iruma

    Language:
    English
    Words:
    44,057
    Chapters:
    16/?
    Comments:
    8
    Kudos:
    38
    Bookmarks:
    23
    Hits:
    3,083

  3. Human in a Storm by

    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 Aug 2025

    Tags
    Summary

    Alternate Universe where Iruma's parents summon Baal instead of Sullivan, and he becomes a pseudo-member of the Demon World Reformation.

    Made for the Welcome to Demon School! Iruma-kun AUgust Discord server.

    Language:
    English
    Words:
    4,701
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    58
    Bookmarks:
    2
    Hits:
    341

  4. affection addiction by

    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 Jul 2025

    Tags
    Summary

    Kirio is desperate for affection. Baal is happy to provide.

    Language:
    English
    Words:
    4,291
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    11
    Bookmarks:
    1
    Hits:
    267

  5. Cat ‘n Mouse by for Meeparino

    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)  

    03 Jul 2025

    Tags
    Summary

    It’s time for the Freaklish Festival! An event in the Netherworld of dressing up and getting candy or tricking those close to you (basically Halloween in the Netherworld) and it’s set in Babyls!

    The Love Trio is invited and plan to go together to have some fun and make more memories together.

    But what’s with Iruma? He’s anxious, he doesn’t trust his invite, their invite but he doesn’t know why.

    And unfortunately for him, he’ll find out soon enough and he’ll regret not trusting his gut for once in his life.

    Language:
    English
    Words:
    7,687
    Chapters:
    3/?
    Kudos:
    21
    Bookmarks:
    2
    Hits:
    466

  6. Take Me Down to the River and Bathe Me Clean by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)  

    19 Jun 2025

    Tags
    Summary

    One day, without warning, Kirio returns to Babylus.
    But something has seriously changed about him.
    And damn it, Iruma is going to figure out what.

    Language:
    English
    Words:
    56,708
    Chapters:
    20/20
    Comments:
    39
    Kudos:
    94
    Bookmarks:
    14
    Hits:
    2,600

  7. Asylum by

    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)  

    18 Jun 2025

    Tags
    Summary

    "Iruma remembered turning the corner to reach the Royal One, when a voice he hadn't heard in months came from behind him. "Iruma-chan~" His skin crawled. Iruma recognized that voice. He hadn't heard it since the Heartbreaker event. Iruma turned around and what he saw confirmed his doubts: Atori, the teacher who had gone mad during Heartbreaker and attacked some students and other teachers, was standing there as if nothing had happened. A creepy wide smile on his face, the demon was looking at him slyly "How long! How about a reunion with your teacher?" Atori asked mockingly"

    Basically Iruma is kidnapped by the Six Fingers and they try to convince him that he is a patient in a psychiatric clinic.

    Language:
    English
    Words:
    9,932
    Chapters:
    4/6
    Comments:
    29
    Kudos:
    63
    Bookmarks:
    6
    Hits:
    1,121

  8. The Hate Trio by

    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)  

    28 May 2025

    Tags
    Summary

    Basically, a fluffy one-shot with what I call the Hate Trio - Kirio, Atori, and Ocho. They do various concerning activities that include:

    - Roleplaying as the Love Trio
    - Ticking Poro off and making him beat them up (and two out of three enjoyed it)
    - A surprisingly wholesome outgoing if it wasn't for the plotting of destruction of the Netherworld
    - A therapy discussion that turned into a sobfest for both Atori and Ocho and a despairfest for Kirio
    - Somehow it ended up with messing Baal's carpet up with their respective blood, drool, and tears...again

    Series
    Language:
    English
    Words:
    1,238
    Chapters:
    1/?
    Kudos:
    10
    Hits:
    111

  9. Incorrect Quotes: Teacher Edition by

    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)  

    21 May 2025

    Tags
    Summary

    Look at title. We also get a few cameos on the Misfits and other varied adults.

    There's more characters then this but I grew tired of tagging them all.

    And probably more ships. Eventually

    -

    Quotes from various incorrect quotes generators and edited by me

    Series
    Language:
    English
    Words:
    2,332
    Chapters:
    3/?
    Comments:
    15
    Kudos:
    54
    Bookmarks:
    3
    Hits:
    489

  10. Kalego's Happily Ever After- Love Confession Edition by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)  

    19 May 2025

    Tags
    Summary

    Sila has been in love with Kalego her boss for 3 years. But for the sake of her heart and career can she confess to him so she can move on? But wait, what if Kalego likes her too?

    A lovely romance
    ~~~~
    If you read my Happy Valentine's Day Kalego story, it's the same couple but we see their entire romance here.

    Language:
    English
    Words:
    61,401
    Chapters:
    15/?
    Comments:
    2
    Kudos:
    29
    Bookmarks:
    2
    Hits:
    696

  11. Iruma dissent into madness by

    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)  

    19 Apr 2025

    Tags
    Summary

    A graphic look into the story of welcome to demon school where Iruma Is founded by Baal and hijinks ensue...

    Language:
    English
    Words:
    3,036
    Chapters:
    3/?
    Kudos:
    16
    Hits:
    265

  12. Don't Cry, You're Perfect. by

    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)  

    06 Apr 2025

    Tags
    Summary

    Kirio Ami, denied son of the Ami clan due to his lack of magic power, ended up engaging with the terrorist group named "Six Fingers" and specially with their powerful boss, Sabnock Baal.

    TW!!!!
    Mention of abuse, pedophilia, Stockholm syndrome, blood, suicide thoughts, self harm, masochism, cannibalism? and spelling mistakes.

    Language:
    English
    Words:
    2,218
    Chapters:
    1/1
    Kudos:
    10
    Hits:
    303

  13. Tea Party by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)  

    04 Apr 2025

    Tags
    Summary

    Because even if it’s just a passing fancy, just infatuation—even if Baal will ask to see less of Shura like she has a feeling he will at some point today—she sees no reason not to enjoy Baal’s attention and company to the fullest while she can.

    ***

    (Princess Shura and her many, many, many thoughts on Baal.)

    Language:
    English
    Words:
    2,944
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    13
    Bookmarks:
    4
    Hits:
    196

  14. of red ropes and towers by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)  

    11 Mar 2025

    Tags
    Summary

    Takes place semi-directly after the previous fic in this series, "lab rat".

    Baal decides to take Kirio up on his offer to join the two of them in bed, much to Iruma's dismay.

    Series
    Language:
    English
    Words:
    6,280
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    55
    Bookmarks:
    3
    Hits:
    1,070

  15. lab rat by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)  

    06 Mar 2025

    Tags
    Summary

    Takes place in an AU during Heartbreaker where Atori succeeds in kidnapping Iruma.
    After a long week of dealing with Baal's experiments, Iruma is left to the "care" of Kirio, who has something- or someone- to introduce him to.

    Series
    Language:
    English
    Words:
    6,162
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    45
    Bookmarks:
    5
    Hits:
    1,232

  16. Stay after class, I still hate you by

    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 Feb 2025

    Tags
    Summary

    The youngest of the respected Naberius clan: Kalego, 14 years old, straight A's, perfect student, rank 4, future guard dog of Babyls. Basically, this boy is a completely Gary Sue in the eyes of the guys his age who know him.
    Kalego's life is completely normal, for not saying boring.
    Wake's up at 5, takes a quick shower, gets changed, has a light breakfast with refined food, checks his homework and goes to school at 6.
    There's nothing weird with him, except that he's very strong and intelligent and all the things expected from a Naberius.

    Opera, 16, A.K.A the Top Dog, this kid is a mess. They used to be a stray until Sullivan adopted them 5 years ago after catching them in his garden stealing some fruit. They tend to skip classes and is always fighting with other students

    Accidentally, Opera got confused with Kalego, so upper class students are now annoying Kalego. After solving the problem, Kalego noticed that Opera had...some kind of past time with bullying, mocking and teasing him, he had enough of that and today he's confronting them.

     

    The character are from ‘Mairimashita! Iruma-kun, Kalego Gaiden’ they don't belong to me, support the og story and the spin off please.

    Language:
    English
    Words:
    4,012
    Chapters:
    2/2
    Kudos:
    34
    Bookmarks:
    3
    Hits:
    822

  17. Happy Valentines Day Kalego! And More by

    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 Feb 2025

    Tags
    Summary

    Confess to Kalego, become his girlfriend, and spend Valentine's Day with him.
    Oh and he's the best boyfriend ever.
    Now with less! lol

    * I changed this back to 1 chapter story because I was bending backwards and doing loops trying to extend this romance where I was trying to explain things that should have been straight forward. I literally had to delete 74 pages worth of story but do not to worry.

    Sila and Kalego have such a great romance that I rewrote their story from day 1 and it's my favorite work yet, so I hope you read it when I their romance in a new work. Please look forward to it.

    Language:
    English
    Words:
    3,470
    Chapters:
    1/1
    Kudos:
    15
    Bookmarks:
    1
    Hits:
    475

  18. A ne folosi unul pe altul pentru interesul nostru propriu în această alianță by

    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)  

    09 Feb 2025

    Tags
    Language:
    Română
    Words:
    5
    Chapters:
    1/1
    Kudos:
    2
    Hits:
    76

  19. Killing despair by

    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)  

    04 Feb 2025

    Tags
    Summary

    "Kalego ran a hand through his hair, frustrated. He didn't want to indulge the follies of an old demon in mourning; but if, on the other hand, he was right… "I'm not accepting, let me be clear," Kalego replied firmly, "But I want to know what kind of trouble you're getting me into this time". Sullivan, having arrived at his house, finally smiled with a pure heart. "Nothing difficult, Kalego-kun. Really, a trifle... you have to go back in time"

    Basically Kalego goes back in time to save Iruma.

    Sequel to "Killing kindness".

    TW: practically all those in the tags + mention of sexual violence against a minor.

    Series
    Language:
    English
    Words:
    45,053
    Chapters:
    7/7
    Comments:
    151
    Kudos:
    136
    Bookmarks:
    23
    Hits:
    2,350

  20. The Demon King's Bride by

    Fandoms: 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)  

    11 Jan 2025

    Tags
    Summary

    Iruma's ascension to the throne leaves Sabnock into a reserved position, Iruma's bride.

    Language:
    English
    Words:
    3,438
    Chapters:
    2/3
    Kudos:
    50
    Bookmarks:
    3
    Hits:
    856

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