Is Urusei Yatsura: The Shougaibutsu Suieitaikai hentai?

Special · 2008 · 1 episodes · PG-13 - Teens 13 or older

Action, Comedy, Romance, School, Sci-Fi, Shounen

On a very hot summer day in Tomobiki town, Lum, Ataru, and the rest of the gang are looking forward to using the school's pool. But the teachers have other plans: setting a ludicrous obstacle course between the students in their swimsuits and the pool... naturally this ends in complete chaos. (Source: AniDB)