The older man I looked up to smiled fearlessly and kissed me. Even though you don't respond to my feelings sweetly, leaving bite marks. Sumire wants to have a "normal love affair" like a college girl. Despite this, Sumire's grandfather's subordinate, Aisuke Urushido, calls himself a bodyguard and persistently disturbs him whenever he meets a man. I really want Aisuke, who I've loved for a long time, to turn around, but on the day I go out to give up, I end up with a naughty atmosphere with Aisuke... But I'm sure this love will never come true... Sumire's grandfather is the leader of the yakuza Ryuo-gumi, and Aisuke is his loyal subordinate. "That's why, that 's why I'm leaving this house."