Natsuko is one of Nobuaki's classmate. She have a lot of friends and she's the first one to talk to Nobuaki. At the end of the chapter one, she become more violent and scary. It's the other face than she hides for so long. She's the principal antagonist of the manga. Like Nobuaki, she has already attended a Kings game before. She's Chime's big twin sister. At the end of the last book, Riona kill her with a chainsaw. But before she past away, with the same chainsaw, she kill Nobuaki. The reason why she was wanted than everybody die was because she didn't want they suffer too longé