Kenko Zenrakei Suieibu Umisho

Oma Oma ~ (1x12)

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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.