ケンコー全裸系水泳部 ウミショー [Kenkō Zenrakei Suieibu Umishō]

From 2006 to 2008, Kōdansha published Kenkō Zenrakei Suieibu Umishō, a nine-issue manga series that blends high school swimming club antics with cheerful, ecchi comedy. Written and illustrated by Mitsuru Hattori, the story follows the eccentric new member Amuro and her impact on the otherwise average boys' swim team, known for its lighthearted, fanservice-heavy tone. Though short-lived, the series stands out as a playful, period-specific slice of 2000s manga humor.