Tsukina and Ryouki have been dating since their teenage years. Unfortunately Ryouki has developed a obsession with cleanliness that has left him unable to even touch Tsukina. Eventually agreeing to start therapy for his condition, Ryouki meets Chiharu, a young woman suffering from the same issue as himself, and begins to form a connection. At the same time Tsukina meets a handsome Korean man who shows an interest in her.

Hiro, a young Korean man in Japan, meets Aoi, a digital artist from a wealthy but restrictive family. As their relationship deepens, they visit a charkha studio, inspiring Hiro to create music again. Aoi rejects her family’s corporate expectations and stays at Hiro’s mother’s house. When Hiro gets an unexpected music opportunity in New York, they plan to go together, but Aoi’s father pressures them to separate.