Promotion
Hinako Nakayama has spent her entire life in government-run orphanages without knowing her family. When she is about to enter high school, Hikaru, who claims to be her twin, approaches Hinako. According to Hikaru, Hikaru and Hinako are the children of Onigashima, a powerful yakuza family, and Hikaru asks Hinako to take his place in the Shishiku Academy, where everyone is male and the toughest thugs in the country. Can Hinako save her sister, find love and become the school's new boss?