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

TV · 13 episodes · PG-13 - Teens 13 or older
Adventure, Anthropomorphic, Comedy, Gag Humor
Collection of animated shorts from MTV Japan and produced by Studio Kanaban that follows the misadventures of Kirenenko and Putin, two rabbits stuck in a Russian prison.
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