Is Himouto! Umaru-chan OVA hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

OVA · 2015 · 2 episodes · PG-13 - Teens 13 or older
Comedy, Otaku Culture, School, Seinen
Episodes included in the manga's seventh and tenth volumes.
View on MyAnimeListShare
Check another title