Isaku just wants to live a normal life. But as the granddaughter of a yakuza boss, that’s a pretty tall order. For years, it’s been difficult for Isaku to make friends and find love. So, she decides to enroll in a high school far from her hometown in hopes of a fresh start. But her plans take an unexpected turn when a worried member of the yakuza, Keiya, enrolls in the same school to protect her.