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 granddaughter of a family of gangsters, with an overprotective guard dog: Keiya Uto, a first lieutenant who fabricates his age to enroll in high school along with Isaku to protect her from venomous insects—men. Isaku has always thought Keiya treats her like a child, but lately, he’s been acting differently. She begins to wonder: “Does he actually have feelings for me…?!” Can she really be with such a dangerous man? Wanting to confirm her feelings, Isaku takes action! Could their tantalizingly ambiguous relationship finally be changing?!