Princess Lover!

Season 1, Episode 6: Steam, Crying, and the Lucky Pervert

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Teppei comes up with the idea of "a party only he can throw," and gathers the members of the social club together, and they head off by train to a hot springs inn. Charlotte and the others are overjoyed as it's their first time on such an ordinary trip! Meanwhile, Teppei and the other boys are plotting something evil.