Through a chance encounter, two pairs of friends unite into one close-knit friend group. After spending time together and getting to know each other, Nao comes to recognize Aoi's romantic interest in her friend Chihiro. However, Aoi and Nao also realize that Chihiro has romantic feelings for their mutual friend Shino, leaving Aoi in a state of heartache. Nao consoles Aoi, which serves to deepen their bond. As the two become closer, Nao soon finds herself falling in love with Aoi. Thus begins the complex web of romance amongst the two pairs.