Koharu Uzuki spent her middle school years completely alone, unable to make friends due to her extreme shyness. Longing for a vibrant youth, she enters high school determined to change. However, she completely fails during her self-introduction on the very first day. Just when things seem hopeless, the class’s most cheerful and outgoing girl, Aoi Yuuki, reaches out to her. That moment sparks a change in Koharu’s high school life… A heartwarming story of love and friendship between four very different girls: the shy Koharu, the sunny extrovert Aoi, the easygoing childhood friend Sora Ukino, and the cool beauty Miumi Shiratori.