Saki is sent to Kirinoha Gakuen, where a Kung-fu club is ruling the whole school. She tries to join the club Koryukai and shows how strong she is to the members. A girl, Fujitani Yuri approaches her saying that she wants to avenge her brother, Fujitani Jiro of the basketball club, who was beaten up by Koryukai. Saki tells her that she came to beat up the Koryukai.
Yuri introduces Saki to Yajima Yukino, who is good at martial arts. Yukino doesn't like the Koryukai either, but she also doesn't feel friendly towards Saki.
Yuri is attacked by Koryukai and Saki prepares to fight Koryukai. Knowing that, Yukino joins her. They defeat the members and are about to reach the leader, Hitori Reiko who barely escapes.
