Alternate Title: Mousou Dairinin
Studio: Madhouse
Year: 2004
Length: 13 Episodes
Genre: Psychological Thriller

Synopsis:
This is a psychological thriller that revolves around a mysterious attacker, called "Shonen Bat". He wears golden roller-skates and a baseball cap. He also has a bent baseball bat that he attacks people with. The first victim was Tsukiko Sagi a designer of a popular stuffed animal Maromi. Each episode has a different main character but its all connected with Tsukiko, the detectives and victims.

1st Opening Song: yume no shima shinen kouen by Susumu Hirasawa
1st Ending Song: shiroi oka maromi no theme by Susumu Hirasawa