The Killer Inside (2022)

Original title: 親愛なる僕へ殺意をこめて

Eiji Urashima, a sophomore in college, spends his days with friends with the mindset of “as long as I'm having fun, that's all that matters in life.” Although Eiji appears to be a carefree college student, he has had a tough life as a young boy, being bullied and harassed severely for his father being a serial killer. Meanwhile, Eiji, who has been hiding the fact that he carries a heavy cross as the son of a serial killer, has a loved one called Kyoka Yukimura...