Hyouka Morikawa, a girl with albinism, is used to strange looks. However, she was ruthlessly tormented throughout junior high, with Yuji Tanihara being the ringleader. Years later, when Hyouka transfers schools in the middle of the semester, she finds herself in the same class as her former bully. Rather than the meek girl she used to be, she has become a cold-hearted ice queen, and when Tanihara asks for forgiveness, Hyouka agrees on one condition- he is to be her loyal dog.

"Crossdressing to be on the boys' court. That's unheard of, Kou-chan." Kousuke, a crossdresser for the sake of the satisfaction of fooling her peers, is a second-year transfer student at Aoba Josai High. Because of her disguise, no one realizes her true gender. She doesn't share this information with anyone openly, not even with her teachers. She joins the boy's volleyball team, a powerhouse team, without anyone realizing she's female. She has an off-feeling about her captain, an upperclassman named Oikawa, which she can't quite explain. He would be the first to learn that she isn't a male, but doesn't expose this fact to others, not even the rest of the team. With this secret between the two of them, they grow close, bound over what others don't know.

The sea and the land were never meant to mix. Generations ago, the two worlds were split in half: The sea belonged to the sea folk, and the land belonged to the surface dwellers. Now, with a long-standing resolution in place, they exist side by side, but never as one. It is law. It is tradition. But sixteen-year-old Risa Moriyama has never been one to follow the rules. Drawn to the ocean with a longing she can't explain, she dreams of the world beneath the surface. Of Sea People, of freedom, of a life beyond the one chosen for her. When the tide of change reaches her own life, Risa is left questioning: can she chase the life she craves, or must she surrender to the fate she's originally been given?