Kenji Sugihara

A black box crashes through the roof of Naoto Miura, a brilliant amateur tinkerer. Inside the box is a mysterious female automaton. They must work together to avoid the destruction of their city. (imdb)

Umaru is Taihei's little sister who boasts beautiful looks as well as prowess in both school and sports. However, she has a certain secret. She's a "Himôto" a little sister who is proper in public but lazy at home. (ANN)

Furuya has a fascination with zombies and collects trinkets and watches any movie and plays any game containing zombies. When his cat dies, however, this hobby becomes somewhat of an obsession as he tries to revived his pet using an old manuscript. Rea, a popular girl who seems to have it all, is not as happy with her life as it would seem. Her wish is to be reborn as another person and she might just get her wish after crossing paths with Furuya. (imdb)