Is Planetarian: Snow Globe hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

OVA · 2021 · 1 episodes · PG-13 - Teens 13 or older
Drama, Sci-Fi
The new OVA will feature the prequel short story "Snow Globe," which debuted as part of a light novel volume that bundled with a limited-edition version of the original PC game.
View on MyAnimeListShare
Check another title