Detective Conan (1996)

Season 1: Episode 1061

While Instructor Onizuka is reprimanding his police cadets, Morofushi spots the missing person report for a young girl who went missing the previous night. His friends ask him why he's so interested in the girl, but simply explains that she looks similar to a girl he used to play with as a child and refuses to elaborate. With coaxing from his friends, Morofushi eventually opens up and begins telling them about the murders he witnessed as a child...