The timid and reserved Mitsuki Haruno seeks her dream sociable life at high school. But despite her best efforts, her ineptitude to speak her mind impedes her from befriending anyone. Nonetheless, while working at a cafe one day, she has a fateful encounter with her school's four idolized basketball players—Towa Asakura, Rui Miyamotoi, Ryuuji Tada, and Kyousuke Wakamiya. At first glance, these four heartthrobs come off as arrogant individuals, responsible for invading her cafe's safe haven. Soon after though, as they uphold their promise of keeping her workplace a secret, Mitsuki starts to see them in a new light.

Hence begins an improbable friendship between Mitsuki and the boys, as her days of solitude finally comes to an end. However, things aren't always so simple—with her heart waning toward Asakura and the female students green with envy, is there a chance this friendship could blossom into something more?