Kenkou Zenrakei Suieibu Umishou Season 1 Episode 12 Oma Oma ~ ( Air Date 2007-09-19 ) Genre Animation, Comedy category. Overview "It's the Kantou prefecture swimming tournament, and the Umisho swim club is there. After doing poorly in the preliminaries due to a bet, the girl's team pours things on in the middle. In the relay race, the team discovers another team is cheating when they use a song to help the swimmer along.".