Is Hidamari Sketch: Sae Hiro Sotsugyou-hen hentai?
English title: Hidamari Sketch: Sae & Hiro Graduation
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

OVA · 2013 · 2 episodes · PG-13 - Teens 13 or older
CGDCT, Iyashikei, School, Slice of Life, Visual Arts
The day has come for Sae and Hiro to graduate, who are now in their last days as High School students. The first episode centers on the final exams and the university entrance tests, while the second episode centers on the graduation of Sae and Hiro.
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