Where Does the Sea Begin

The story revolves around the love, friendship and relationships between four characters who meet by chance.

Tsumugi Aoba and Sou Sakura dated in high school. They both liked music. After graduating, Sou sent her a message breaking up. She started dating Minato Togawa, a mutual friend. 8 years later, she sees Sou, only to learn he is deaf.

In the middle of a riverside park stands a single bench. One evening, a couple of childhood friends who hadn’t seen each other in a while meet up at this bench. Although awkward at times, they sit there exchanging gentle words of affection.

A sudden summer accident shatters the peaceful lives of two couples, dragging a happily married editor into a web of grief, human selfishness, and her husband's hidden secrets.

Maiko Misono, who had been working abroad to become a professional ballet dancer, gave up on her dream and returned to Japan. With nothing else to do but ballet, she starts working as a Japanese language teacher at a high school near her parents' home. But for Maiko, who has just given up on her dream, high school is an ironic place full of dreams and hopes. In addition, she is made the advisor of the volleyball team, a position she has no experience in, and her homeroom class is full of unique students, which only adds to her anxiety.

Haunted by lies and unable to trust anyone, Omori Mitsuko faces a Christmas Eve that turns a struggling izakaya into the center of unexpected chaos.