Shun Hashimoto is an aspiring writer and openly gay person abandoned by his parents for his sexuality. Meanwhile, alongside the sea, Mio Chibana, a high school rookie who has lost his parents, seeks solace. They met at the beach, and Shun was immediately drawn to Mio. Their bond grows stronger with each passing day, but their joy is short-lived when Mio announces his departure to mainland Japan. Years later, Mio returns to Okinawa when he is twenty to declare his love for Shun. However, things are far more complicated for Shun now than when they first met. Will Shun be willing to accept Mio's sincerity and make a commitment?