41 - 60 of 814 Works in Opera (Mairimashita! Iruma-kun)

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  1. Heated Need by

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

    03 Sep 2025

    Tags
    Summary

    The Sullivan Estate's hellcat is taking a vacation due to heat.

    Language:
    English
    Words:
    2,537
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    6
    Hits:
    129

  2. Welcome to The Zone Iruma-Kun by

    Fandoms: S.T.A.L.K.E.R. (Video Games), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)  

    03 Sep 2025

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    Summary

    The Zone is no place for a 14 year old boy, and yet Iruma was always one to surpass expectations. However, he would soon trade from one hell to another, and would live the supposed happy life he always wanted. However, one thing still rings true: You can leave The Zone.. but The Zone never leaves you...

    Language:
    English
    Words:
    14,573
    Chapters:
    3/?
    Comments:
    15
    Kudos:
    96
    Bookmarks:
    13
    Hits:
    1,606

  3. Write Your Wish 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), Scribblenauts (Video Games)  

    02 Sep 2025

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    Summary

    A lot happens on Iruma's first day of school. He makes new friends, meets a few teachers, wins a notebook in a small challenge a teacher prepared, and he finds out what class he's in!

    It's an exciting ride, and from there, Iruma has what he needs to start building a small support system, the first one he has ever had. It should only be small though, it's not like he's super-duper likeable. Right? Right??

    Series
    Language:
    English
    Words:
    38,965
    Chapters:
    15/?
    Comments:
    136
    Kudos:
    245
    Bookmarks:
    61
    Hits:
    6,446

  4. Love in the multiverse 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)  

    31 Aug 2025

    Tags
    Summary

    No matter where we are, love will always be there. Either with a hug with your dad, a party with your friends or just in a happy conversation; that feeling is the most precious thing someone can have in this world... and in other ones too.

    Five different stories of our favorite Mairuma characters in different universes, where love would be the protagonist in dates, family situations and tough times.

    Language:
    English
    Words:
    24,089
    Chapters:
    5/5
    Comments:
    4
    Kudos:
    28
    Bookmarks:
    4
    Hits:
    725

  5. Yummy by

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

    31 Aug 2025

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    Summary

    "THIS CHILD HAS NO WINGS" Balam would burst into the teachers Louge carrying Iruma in hand, And Iruma would think (THIS IS WHERE I DIE NOOOOOOOOOOOOOOO)

    "What of course they have wings!"

    "Are you sure they must be tucked under?" In a flash Balam pulled up the shirt showing a bare back. The teachers would be silent for a second until they all started to drool.

    OR

    Author here no idea why I thought of this strange chapter 63 fic but got to bring something fresh I guess lol. Please enjoy Yummy lol

    Language:
    English
    Words:
    479
    Chapters:
    1/1
    Comments:
    3
    Kudos:
    15
    Bookmarks:
    2
    Hits:
    409

  6. The Top Dog Batra 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)  

    31 Aug 2025

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    Summary

    The first day of the new school year is always interesting, but nobody was expecting a student to walk down the halls and create such a stir. Oh yes, only an hour in and rumors are flying about a curly haired demon, wearing a mixed uniform, and openly carrying alcohol and cigarettes on school grounds.

    In the first hour, everybody is talking about Naberius Kalego, and what an abnormal demon he is. All while Kalego is having the best day of his life. Smile on his face, and tail wagging as he walks down the beautiful halls of Babyls.

    Language:
    English
    Words:
    1,800
    Chapters:
    1/?
    Comments:
    3
    Kudos:
    17
    Bookmarks:
    2
    Hits:
    219

  7. Чорні та білі лінії на сірому полотлі життя малюють пензлі надприродного 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)  

    30 Aug 2025

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    Summary

    Порядок клану Наберіус завжди тиснув на всіх. Це не обійшов Кальєго звинувачуючи у зв'язку з монстром, який живе у світі людей. Це звинувачення призвело до того, що була спроба вбити непотрібну сім'ю в клані та магічна зміна якої ніколи не була.

    Ірумі знала, що вона скарб лише для батька. Але вона була надто юна, коли зрозуміла це. Тільки ось тепер їхній маленькій родині треба мати справу з раптовими змінами та новими демонами, які вилазять із минулого батька

    Language:
    Українська
    Words:
    4,429
    Chapters:
    4/?
    Kudos:
    12
    Bookmarks:
    3
    Hits:
    195

  8. 【ALL入间·虎视眈眈24H｜00：00】魔界植物实地调查录 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 Aug 2025

    Tags
    Summary

    -官方原作设定
    -CP：主巴拉姆/入间，有提及欧佩拉/入间
    -私设补充漫画中入间在魔界黑紫色指甲的来历
    欧佩拉和沙利文都有要务在身，由男妈妈（？）巴拉姆老师带领入间探索魔界里奇奇怪怪植物们的一天
    祝七夕愉快！

    Language:
    中文-普通话 國語
    Words:
    3,293
    Chapters:
    1/1
    Kudos:
    4
    Hits:
    129

  9. Welcome to Demon School: Iruma & Y/N ~☆ by

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

    26 Aug 2025

    Tags
    Summary

    Featuring Iruma's 'twin' - Y/N

    Language:
    English
    Words:
    4,704
    Chapters:
    1/1
    Kudos:
    8
    Hits:
    106

  10. Birds Of A Feather 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)  

    26 Aug 2025

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    Summary

    The first time he saw her, Shichiro was in his second year. Kalego was on his right as they walked to class, ranting about how foolish and loud the students were and how when he took over being the “Guard Dog,” the students wouldn’t be anywhere near rowdy—something he complained about often. But Shichiro had to agree with that statement. Much of the student body would fight each other if someone dared to look at them wrong. Which, of course, the universe took as a sign for another one to start.

    Language:
    English
    Words:
    12,509
    Chapters:
    11/?
    Comments:
    1
    Kudos:
    23
    Bookmarks:
    5
    Hits:
    758

  11. Opera x Cat! Reader by

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

    26 Aug 2025

    Tags
    Summary

    Just a short, messy and fast paced fic that's been on my mind recently.

    Reader is gender neutral!

    Language:
    English
    Words:
    2,633
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    7
    Hits:
    63

  12. One little slip up by

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

    25 Aug 2025

    Tags
    Summary

    Azz and Clara find out about Iruma trauma and possibly humanity by one little slip up.

    Language:
    English
    Words:
    5,591
    Chapters:
    2/?
    Comments:
    9
    Kudos:
    13
    Bookmarks:
    3
    Hits:
    282

  13. Depraved 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 Aug 2025

    Tags
    Summary

    Iruma tries to be a good boy he really does but when everything goes to shit so does he. Balam, kalego and everyone else trying to get iruma to finally be happy.

    Language:
    English
    Words:
    3,147
    Chapters:
    4/?
    Comments:
    4
    Kudos:
    61
    Bookmarks:
    8
    Hits:
    1,354

  14. Ashes Of The Sun. 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)  

    24 Aug 2025

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    Summary

    Hua Surya is an heir.
    Not an heir to become the demon king, but a sun deity.

    Now, he attends bablys after being raised in a household where his life didn't matter but his father's name did. He has to conceal the bottom half of his face... or else.

    Language:
    English
    Words:
    4,930
    Chapters:
    3/?
    Comments:
    4
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    95

  15. Creepy alleys 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)  

    24 Aug 2025

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    Summary

    "Iruma had often found refuge in the alleys, from the criminals who chased him with endlessly firing guns, but also from the weather. Nothing was more satisfying than finding some shade in a secluded alley on a hot, humid day. Other times, Iruma had found warmth during the freezing winter nights, huddled against the air conditioning vents of commercial establishments"

    Basically Iruma recalls his good and bad experiences in the alleys of the Human Realm while in the company of Sullivan and Opera.

    Series
    Language:
    English
    Words:
    1,588
    Chapters:
    1/1
    Comments:
    8
    Kudos:
    55
    Bookmarks:
    5
    Hits:
    446

  16. A Familiar Fear 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)  

    24 Aug 2025

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    Summary

    Kalego has filled over 66 notebooks dictating every step of his success at Babyls. Though he is just a student at this time, by the time he is a sixth year, he will be a successful, highly-ranked demon. And more importantly, the next Guard Dog of Babyls.

    Unfortunately, not any of the 66 notebooks mentioned how to avoid the nuisance that his wretched homeroom teacher would be.

    Why or why did Iruma-sensei want to make his life so difficult. Kalego wondered why the teacher was just so....abnormal.

    Series
    Language:
    English
    Words:
    3,318
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    48
    Bookmarks:
    5
    Hits:
    351

  17. A matter of time 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)  

    22 Aug 2025

    Tags
    Summary

    Did you forgot to do the one simple thing you had to do for your batra?

    Worry not!

    You only need a prohibited spell, some time traveling, trying to avoid everyone you know and failing within five minute and-

    Wait, what was the question?

    Language:
    English
    Words:
    18,447
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    15
    Bookmarks:
    4
    Hits:
    275

  18. to love me is to suffer me by

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

    22 Aug 2025

    Tags
    Summary

    In the low light of Doctor Balam's infirmary, Opera is the only one who is allowed to touch Iruma.

    Language:
    English
    Words:
    3,176
    Chapters:
    1/1
    Comments:
    3
    Kudos:
    35
    Bookmarks:
    2
    Hits:
    412

  19. ¡¡¿¿Una Humana en un mundo de demonios??!! ¡¡¡¿¿Qué??!!! by

    Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)  

    22 Aug 2025

    Tags
    Summary

    Zenitsu parpadeo lentamente. Miro a su alrededor pero se centro en otra cosa, algo frente a ella.

    Series
    Language:
    Español
    Words:
    14,439
    Chapters:
    9/20
    Kudos:
    26
    Bookmarks:
    2
    Hits:
    601

  20. Grounded...?(hiatus) 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 Aug 2025

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    Summary

    What if Ali didn't have enough time to save iruma but would it even cover everything...

    What if iruma was an (ðəmøŋ) human and he was scared he might get eaten

    Who is iruma's real father..?

    Language:
    English
    Words:
    2,269
    Chapters:
    3/?
    Comments:
    30
    Kudos:
    183
    Bookmarks:
    37
    Hits:
    3,330

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