University student Shinichi Sakurai is comfortable being an introverted loner and doesn’t care what others think. Buxom underclassmen Hana Uzaki doesn’t understand this one bit. A tornado of joy, she’s taken it upon herself to make him more social. Starting to enjoy her company, he’d concede that they’re friends. Can it be possible to have as much fun with another person as he would by himself?

During the summer holidays, energetic Hana Uzaki spent most of her time accompanying her lonesome upperclassman, Shinichi Sakurai. Now that school has resumed, Uzaki's teasing continues to ramp up, much to Sakurai's constant annoyance. Nevertheless, no amount of ridicule can damage the pair's relationship—which only seems to be getting better as their college days fly by!