Azami High School is a school requiring all students to wear sukumizu as uniforms. The school is famous for its variant and frequent aquatic activities; however, Kanata, a transfer student, cannot swim! With the help of her friends, including Reika, who also cannot swim, Kanata somehow managed to enjoy her high school life.

水着の着用が校則で義務付けられている鮮水高校。 それは水にかかわる行事が多いからなのだけど、転校生のかなたは泳げなかった…！ 同じく泳げないという澪花たち友人の助けを借りて、何とか高校生活を乗り切ろう！ 著者・春雨の初コミックスついに登場！