DEAR DEVIANT
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- Parts 21
MatureOngoing1h 22m
Last published Sun, May 11, 2025
✨ Welcome to the Netherworld, where demons rule and one human girl will turn everything upside down. ✨
Y/N Suzuki, the twin sister of Iruma Suzuki, was dragged into the demon world alongside her brother. Sold by their neglectful parents, they find themselves adopted by the powerful Demon Lord Sullivan. While Iruma tries to blend in, Y/N? She's got fire in her heart, secrets of her own, and a strange pull toward the cold, enigmatic man forced to become her familiar-Kalego-sensei.
This is a story of fate, identity, and forbidden bonds in a world where humans are feared... and love may be the ultimate rebellion.
💥 Slow-burn romance
💥 Jealousy, politics, and emotional twists
💥 Kalego x Reader | Iruma's Twin AU | Canon-Accurate Timeline
Disclaimer:
Mairimashita! Iruma-kun and all its characters (Iruma Suzuki, Kalego Naberius, Sullivan, Asmodeus Alice, Clara Valac, Ameri Azazel, Opera, etc.) are created by Osamu Nishi. I do not own the rights to the original series. This fanfiction is a transformative work made for fun, not profit.
All Rights Reserved
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I WANT YOU TO BE MY GRANDCHILD ( Welcome to demon school / reader) slow updates
DISCONTINUED When Sullivan decides to buy Iruma to become his grandson, he did not expect a granddaughter to also make an appearance. Well, he expected it, but was more surprised he succeeded on the first try... Now Iruma Suzuki and Y/n L/n are tasked to act like twin siblings and to blend in with the demons in the Netherworld's most prestigious demon school: Babyls. ----------------------------- Enjoy. (Best enjoyed if you have seen the anime first) I WANT YOU TO BE MY GRANCHILD (Welcome to demon school/reader-insert) [slow updates] Also posted on Ao3 Top tag rankings: 1st on #Opera (May 9 2023) 2nd on #ik (May 10 2023) started: February 6 2023 I ONLY own Y/n and all the changes that I had to make to the story to accommodate her existence. Other story parts or ideas that aren't considered as canon in the anime also belong to me. Cover drawn by the author. Everything else is owned by the creators of the show and manga "Welcome to Demon School Iruma-kun!"/"Mairimashita! Iruma-kun".Complete
My secret child!
Poor Iruma never knew who his real parents are but the fact that his true father was a demon, couldn't be this easily solves nor told to a small todler. Then again, he would have found out sooner or later due to the small things that made him stand out and just be different. If his true mother would be still alive... maybe things would be different... maybe things would be even different if his true demon father would knew about the child's situation. However no one knew anything about a small child which lost his mother and was adopted by a kind pair of humans... who inevitably think their own lives matter more than the childs and make him do all kind of stuff.... Oh if things could only go differently.... oh if only Iruma would finally find the meaning behind that paper he still had from his mother sooner.... oh if only! 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.Complete
Primorial Demon
What if Iruma never was a human bit an angel and fell down from heaven? What if he lost all memories of being an angel? What if Sullivan finds him in the underworld and takes him in because he knew that a demon with a kind heart but no wings wouldn't survive? What if the teachers find out about the wingless situation? Well let's find out! A/N: This is a welcome to demon school Iruma-kun fanstory and I have no idea where this is gonna go ... hope you enjoy! Please also feel free to correct my bad writing. Rights on the pictures go to the artist. I do not own Welcome to demon school Iruma-kun, rights to the owner.Complete
A little bit of Fluff for the heart XD
... Do I have to say really more than this? Oh well here we go! Kallego was definitely not expecting to be summoned by a human child and even less being offered their soul just to get a better life. Now what should this demon do when he pities the small child and takes him in? Was this expected? Nope. Was this his intentions from the start? Nope. Was he getting baited by something called Cookies? Nope.... well maybe.... Find out for yourself what Kallego is to do with a child aka Iruma! A/N: This is a Welcome to demon school, 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.Complete
Kill or BE Killed
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.Complete
ＭＡＩＲＩＭＡＳＨＩＴＡ！ＩＲＵＭＡ－ＫＵＮ Ｘ Ｆ！ＲＥＡＤＥＲ 横易ソ
What happens if it turns out that Iruma is not the only human who was adopted by a demon and lives in the world of demons? What if another human was there and was adopted by a demon too and made her his daughter? { (y/n) shirohoshi. a human child whose previously miserable life became brighter after she was adopted by a demon and made herself the demon's daughter. What fate awaits the girl after she is adopted as part of the demon's family? Find out what happens next in (y/n)'s adventure when she meets Iruma and his friends!}Complete
Guardian of My Heart
In an alternate universe where Iruma is half demon, half human. His terrible "parents" aren't his true family, and neither of his true human or demon parents are known to him. Surviving in the human realm as a creature that shouldn't exist, Iruma struggles against the pain and anguish of his life day after day. But when his darkest hour approaches, a familiar presence comes to his aid. He will struggle to adapt to the Netherworld and its demonic nature, as well as survive the internal struggle within himself. Can he move on from the pain of his past and look towards a brighter future, or will he slip into the depths of despair the likes of which none have faced before? (Or: Iruma is Opera's biological son, and he is rescued from the human realm by Demon Border Control and brought to the Netherworld. He has trouble fitting in with his fellow demons at first, but slowly things look like they're getting better. Stress over keeping his hybrid nature a secret begins to build, and he struggles to control his bloodline magic without letting it control him.)Complete
Love you like a Vampire
When legends and myths arises once again and a completly forgotten race come forth from the background, what will the demons do about it? Iruma is not a normal human, in fact he is one of the only vampires still living and excisting in the human world. He was simply lucky he managed to escape to the human world when the boarders to the demon world was closed off. However due to some incidences he fell into a deep slumber until recently.... not the thing was.... Fate and life planned to get him back to the demon world... the question was... were the demons ready for him? A/N: Feel free to correct my bad writing. Rights on the pictures go to the artist. I do not own Mairimashita! Iruma-kun! , rights to the owner.Complete![Welcome To Demon School! Ryūko-chan & Iruma-kun [Volume I]](https://img.wattpad.com/cover/208239663-256-k505678.jpg)
Welcome To Demon School! Ryūko-chan & Iruma-kun [Volume I]
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.Complete
True Ruler
Fourteen-year-old Iruma has been unfortunate all his life. However never did he gave up to reveal his secret. No one was after all alowed to know it. What happenes when he find out that his adoptive parents sold him to a demon? What if that very own demon only wants a grandson and nothing more? At first, Iruma tries to keep a low profile in fear of his peers discovering that he is a dragonkin. Unfortunately, this ends up being more difficult than he expected. Even under normal circumstances Iruma was never allowed to reveal his true nature and race. His parents never cared much for him, since he wasn't their own flesh and blood. What will happen to this little dragon in his new environment? Will he be able to keep his secret? Find out yourself! A/N: This is more or less a copy of my other book which is a crossover. I am doing this because I was dared and get cookies if I finish it :). Feel free to correct my bad writing. Rights on the pictures go to the artist. I do not own Mairimashita! Iruma-kun! , rights to the owner.Complete
DISCONTINUED When Sullivan decides to buy Iruma to become his grandson, he did not expect a granddaughter to also make an appearance. Well, he expected it, but was more surprised he succeeded on the first try... Now Iruma Suzuki and Y/n L/n are tasked to act like twin siblings and to blend in with the demons in the Netherworld's most prestigious demon school: Babyls. ----------------------------- Enjoy. (Best enjoyed if you have seen the anime first) I WANT YOU TO BE MY GRANCHILD (Welcome to demon school/reader-insert) [slow updates] Also posted on Ao3 Top tag rankings: 1st on #Opera (May 9 2023) 2nd on #ik (May 10 2023) started: February 6 2023 I ONLY own Y/n and all the changes that I had to make to the story to accommodate her existence. Other story parts or ideas that aren't considered as canon in the anime also belong to me. Cover drawn by the author. Everything else is owned by the creators of the show and manga "Welcome to Demon School Iruma-kun!"/"Mairimashita! Iruma-kun".
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