"X" Method In The Dead Of Night

Hiroki Kamiya has always harbored a cynical view that women have it easier in life, especially compared to his seemingly carefree sister Yui who spends her days gaming. One evening, after updating his personal "Observation Diary," Hiroki receives a cryptic message claiming to reveal a method for experiencing life as a girl. Initially dismissing it as spam, curiosity eventually gets the better of him. Following the mysterious instructions, Hiroki discovers a bizarre ritual that allows people to temporarily swap bodies with complete strangers. When he tries it for just two hours, he expects nothing more than a brief glimpse into another life. However, upon returning to his own body, he finds himself in a nightmare situation that shatters his perception of reality. Now trapped in a web of unanswered questions and desperate for the truth, Hiroki's only clue is the identity of the girl whose body he briefly inhabited - Mikuni Mikuriya, a popular idol. As he delves deeper into this mystery, he'll uncover dark secrets that challenge everything he thought he knew about identity, justice, and the people closest to him.