The Six Eyed Demon (JJK x mKokushibo reader)

Y/n Tsugikuni or otherwise known as Kokushibo is the right hand man, and fiancé to Ryōmen Sukuna the King of curses, Y/n was supposed to be the heir to the Tsugikuni clan well, his brother Yoriichi was just supposed to be a samurai, Y/n had always try and tell his father that he didn't want to but he would always get slap in the cheek. his clan was know for there breathing techniques and swordsmanship, Y/n had created one called moon breathing without his father, knowing, Y/n had heard about the Jujustu sorcerer and he hated them, from what he heard about them they were supposed to protect people from these creatures called curses but more and more innocent people keep dying from them so Y/n decided when he got older he was going to help the people in need. Y/n decided to leave his clan without his father, knowing but only his twin brother saying that he was possibly never coming back and Yoriichi understood that, Y/n was a mysterious person, showing up out of nowhere and defending people from curses, the Jujustu sorcerer have found out about Y/n, but people said that they never seen his face because it was always covered but what they did know that he was from the Tsugikuni family. One day Y/n had met a mysterious man named Ryōmen Sukuna he had heard about this man from his clan, but never really got the actual chance to meet him Sukuna was a sorcerer who killed many other sorcerers and Sukuna had heard about Y/n before, he was fascinated about by him so the two decided to stick together for many many centuries, even when they both became curses, they started having feelings for each other and eventually became lovers, but when Y/n found out that Sukuna was killed this broke his heart, and he went on the rampage, killing every single sorcerer who was responsible for his lovers death, Y/n went into hiding nobody had heard or seen from him, Now Y/n was in a new era protecting Sukuna's vessel Yuji itadori.

(I don't own JJk or demon slayer)

Started: May 30 2024