Reincarnated as a Yandere Villain [BL]

[Historical Reincarnation Series : Book 1] ※THIS IS AN ORIGINAL STORY. #RAYV: About a gentle kindergarten employee that was reincarnated in a mysterious book as its Yandere villain, and his quest to eliminate his death flags along the way by befriending the novel's characters who were supposed to lead him to his death...