Isaku never asked to be the daughter of a yakuza boss, but when her parents died in a car accident when she was 5, her gangster grandfather took her in and raised her as part of the clan. After years of being avoided by her schoolmates because of her family ties, Isaku is finally ready to make her high-school debut, live a normal life, and maybe even find love…until loyal family servant and Isaku’s dedicated guardian, 26-year-old Keiya, enters high school right alongside her and vows to protect her from all of the above! Now she’s got a chain-smoking, pistol-wielding knight-in-shining(?)-armor to deal with, and navigating high school besides? What’s a young lady to do?!
Isaku Senagaki is the beloved granddaughter of a family of gangsters—and always close by is Keiya Uto, the overprotective first lieutenant that went so far as to fabricate his age to enroll in high school with her to fend off those nasty boys. An innocent young girl and a man of the criminal underworld. Isaku and Keiya are poles apart, but they finally overcome their differences to become sweethearts, madly in love with each other! Isaku is over the moon, but who should find out about her big secret but the leader of the yakuza clan, her grandfather himself? Meanwhile, Shido, the leader of an affiliated yakuza organization, turns up on their doorsteps. He has a history with their family and her mother, and Isaku will need to come to terms with what this means to her.