A Girl and Her Guard Dog

Isaku never requested to be the girl of a yakuza chief, however when her folks passed on in a fender bender when she was 5, her hoodlum granddad took her in and raised her as a component of the tribe. Following quite a while of being stayed away from by her classmates due to her family ties, Isaku is at long last prepared to make her secondary school debut, carry on with an ordinary life, and perhaps find love...until faithful family worker and Isaku's devoted gatekeeper, 26-year-old Keiya, enters secondary school right close by her and commitments to safeguard her from the entirety of the abovementioned! Presently she has a chain-smoking, gun using knight-in-shining(?)- covering to manage, and exploring secondary school other than? What's a young woman to do?