Masaya is a university student, but he attends a school that's not his ideal school. His days are generally gloomy. One day, he receives a letter from serial killer Haimura. He was convicted for nine murders and received the death … Sadawo Abe, Koshi Mizukami, Takanori Iwata, Miho Nakayama, Shimako Iwai, Yu Miyazaki, Hiroto Oshita Added on Netflix 2023-06-08.