Seiji Utsumi was satisfied with just gazing at his beloved Shou-sempai from afar. But when his classmate, Yuki Kurokawa, finds out about his crush, she pushes him to take action, and his one-sided love starts moving rapidly!
While at the tennis training camp, Utsumi and Kurokawa end up getting locked outside for a night. While spending the night with each other, they realize their feelings have finally aligned. But will some unexpected actions by Shou-sempai, Utsumi's first crush, send Utsumi and Kurokawa back to square one? And what shape will Onuma's one-sided crush on Utsumi take next?!