Kenkō Zenrakei Suieibu Umishō

Kenkō Zenrakei Suieibu Umishō
Promotional artwork for Kenkō Zenrakei Suieibu Umishō
ケンコー全裸系水泳部 ウミショー
Genre	Harem, Sports
Manga
Written by	Mitsuru Hattori
Published by	Kodansha
Demographic	Shōnen
Magazine	Weekly Shōnen Magazine
Original run	July 2005 – April 2008
Volumes	9
Anime television series
Directed by	Kōichirō Sōtome
Written by	Mamiko Ikeda
Studio	Artland
Original network	Chiba TV, Animax
Original run	July 4, 2007 – September 26, 2007
Episodes	13

Kenkō Zenrakei Suieibu Umishō (ケンコー全裸系水泳部 ウミショー^?, lit. Healthy All-nude Swim Team Seacats Commerce High) is a manga series written and illustrated by Mitsuru Hattori, which has been serialized in Kodansha's Weekly Shōnen Magazine from issue 33 of 2005 to issue 21-22 of 2008. It has been adapted into an anime television series, directed by Kōichirō Sōtome and written by Mamiko Ikeda, which premiered in Japan on numerous television stations from July 2007, and a video game.

Within the Kanagawa prefecture lies the seaside city of Umineko. There, Kaname Okiura, a student in his 2nd year of high school, attends Umineko Shōgyō High School (海猫商業高等学校, Umineko Shōgyō Kōtō Gakkō^?, lit. Seacats Commerce High School), or Umisho for short. He is also the manager of the Umisho's swim team though he himself doesn't know how to swim. In fact, he is afraid of the water stemming from an incident which occurred some years ago. While he was at the beach, he had nearly drowned when a 'mermaid' pulled him under the water. He joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, who don't teach him swimming.

One day, a floating house arrives at the shores of Umisho bearing two persons. One of these is a cheerful, sunny, happy-go-lucky girl named Amuro Ninagawa, a transfer student to Umisho, and the other is her father. Her incredible swimming speed makes her an instant hit with the swimming club, but Okiura is surprised, as she reminds him of the mermaid he saw only once in his early childhood. After her floating house is destroyed during a storm she moves to Kaname's house.