Nagisa looks tougher than he feels and has no clear plan for life after school, while his best friend Issa already knows exactly what matters to him: fish, the sea, and work at Nagahama’s fish market. The boys spend most days together near the coast until Nagisa begins wondering whether Issa has a girlfriend. Jealousy forces him to reconsider a friendship he has always treated as ordinary and ask whether his feelings are actually romantic.