Kurumi lives under one roof with her father and her overprotective brother, Ataka. One day, she reunites with Nagio, her childhood friend. Now a young man, Nagio doesn't hesitate making advances—much to Kurumi's dismay—kissing her out of nowhere and telling her how he has always liked her, in the process totally wrapping her around his finger. And while Kurumi is put off at first, she eventually finds herself head-over-heels for Nagio ... This childhood-friend romance starring a black-hearted-yet-loving (?) boy is filled with sweet and passionate kisses!
Kurumi's doting brother, Ataka, has repeatedly tried to get in the way of her romance with Nagio, but in spite of that, the two of them carry on with their loving relationship, kissing each other every single day. However, it seems Nagio wants to go beyond just kissing … ?! Here's a romance story starring a black-hearted-yet-loving boy, filled with sweet and passionate kisses!