ニセコイ

Raku Ichijo, son of a yakuza boss, keeps a locket tied to a childhood promise with a girl he can barely remember. After a rough first encounter with Chitoge Kirisaki, the daughter of a rival gang's leader, the two are ordered to fake a relationship so their families won't go to war. Raku has to play the doting boyfriend to a girl he can't stand, all while quietly pining for his classmate Kosaki Onodera and wondering which of them holds the key to his locket.