Is Acchi Kocchi: Place=Princess hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Special · 2012 · 1 episodes · PG-13 - Teens 13 or older
Comedy, Gag Humor, Romance, School
Episode 13 of Acchi Kocchi that was included in Vol.6.
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