Is Usamimi Bouken-tan: Sexual Harassment Shinagara Sekai wo Sukue hentai?
Yes
Rated Rx (Hentai) on MyAnimeList.

OVA · 2021 · 4 episodes · Rx - Hentai
Hentai
One day, a young man was suddenly sent to another world. What appeared in front of him was the self-proclaimed spirit of a pretty girl with rabbit ears growing from her head. This world was in danger of being destroyed and now the two must save it together! (Source: TMDB)
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