Ai Tenchi Muyou!

To save the universe, Tenchi is going undercover—at an all-girl’s school! Can he survive the attention of cute girls at this not-so-ordinary school and put the timelines back into balance? Join the harem and fun in this series of shorts!
(Source: Crunchyroll)
Note: The anime is set in Takahashi, the sponsors for the show, as the city hopes fans will come on a "pilgrimage" to see the setting of the anime, and plans to sell goods and host related events.