Review & Discussion About: Jibaku Shounen Hanako-kun
In the Harry Potter series, a girl named Myrtle haunts a bathroom. Jibaku Shounen Hanako-kun is basically the same idea but instead a boy with a knife is the ghost, a girl without a scar on her forehead is the protagonist, and together they deal with the out-of-control apparitions of their Muggle school.
Whether it reaches the same magical status, though, receives much debate.