Mou Hitotsu no Umi

The manga includes five stories, beginning with two chapters centered on Karino Yoshihito, a recurring character in some of Nishi Keiko's works. The third chapter also involves him but is told from the perspective of a classmate. The fourth chapter follows a girl learning to swim and is tagged with a school life label, as is the previous chapter. The final chapter is a brief slice of life reflecting on the author's early experiences with colors and painting.