The Demonic Experiment (Welcome to Demon School Iruma-Kun X OC)
Oreo_the_mermaid
  • Reads 10,770
  • Votes 327
  • Parts 24
  • Time 4h 38m
  • Reads 10,770
  • Votes 327
  • Parts 24
  • Time 4h 38m
Oreo_the_mermaid
Ongoing, First published Apr 18, 2023
angstbabylsbalamdemonexperimentirumairumasisterkalegoxocoperasiblingssisterocsullivanwtdsikwtdsikxoc
Suzuki Allumi, Iruma's sister is kidnapped by another demon?! Unfortunately for her, this very demon himself twisted the fates of the Suzuki siblings. What happened to Allumi next? How will Iruma face the challenges before him now? 
What's holding you back, readers? Dive in the tale of The Demonic Experiment and find out more about the siblings fate.
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Plot small spoiler (Read at your own risk!)
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After being kidnapped by *unknown* demon, she was experimented and tortured since she was a human which is known as an extinct being in the world of demons. What will happen to her next? Read now to find out more!!!

Highest Story Ranking in each category 
#1 in sisteroc
#6 in experiment
#4 in wtdsik
#18 in Sullivan 
#704 in demon
All Rights Reserved
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Table of contents

24 parts

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Welcome To Demon School! Ryūko-chan & Iruma-kun [Volume I] by Rozeal_Zhao
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A killer on the lose! What would you do if there is a human more terrifying than any demon in the demon world. He has encountered soo much in his life that this little assassin was more dangerous than anyone else. Soo many ways to kill and soo many ways to survive! How will Iruma deal with the situation if he suddenly finds himself in the hands of a demon and not only that but what if this little human even stumbled accidently into the demon world on his own getting caught killing and even demolishing a powerful demon on his onw?!!!!!!! Well just follow Iruma and see for himself as he gives the word cruelty and demonic a brand new meaning! A/N: This is a Iruma fanstory hope you enjoy! Please also feel free to correct my bad writing. Rights on the pictures go to the artist. I do not own iruma, rights to the owner.
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Slide 1 of 10
Welcome To Demon School! Ryūko-chan & Iruma-kun [Volume I] cover
Into the Netherworld || Naberius Kalego x Reader Fanfiction cover
A Darker Path - Welcome to Demon School Iruma Kun! Fan fiction cover
Kill or BE Killed cover
A little bit of Fluff for the heart XD cover
Welcome To Demon School! Ryūko-chan & Iruma-kun [Volume III] cover
Watch Out demon school! Y/n Is coming thru! cover
True Ruler cover
Save The Netherworld, Iruma-Kun!! || A WTDSIK Fanfiction cover
Iruna | The Virtual Escape cover

Welcome To Demon School! Ryūko-chan & Iruma-kun [Volume I]

31 parts Complete

Suzuki Iruma and Ryūko, human (though Ryūko maybe half-demon), 14, one day found themselves taken against their will into the world of demons. To add to their predicament, their doting owner and self-appointed "Grandpa" is the chair-demon at their new school. In order to survive, Iruma and Ryūko must deal with two haughty students who challenges them to a duel, a girl with adjustment issues, and so many more scary beings! Can this duo of an ultimate pacifist and a cold fighter dodge and fight the slings and arrows that are flung their way? As they struggles frantically, Iruma and Ryūko's innate kindness begins to win over enemies. DISCLAIMER: Welcome To Demon School! Iruma-kun (C) is created by Osana Nishi. The following characters, excluding Suzuki Ryūko and Félin Lavande, belong to Osana-chan. I have no rights to claim any canon characters of the anime as my own as it it considered plagerising. Also, big thanks to PikaBlaze (DeviantArt) for being the reason I started this story as I was astounded by their story, causing me to try and use my characters in the story.

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