Is Issho ni Sleeping: Sleeping with Hinako hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

OVA · 2010 · 1 episodes · PG-13 - Teens 13 or older
Ecchi
Once again happy to have someone watching her from the real world, Hinako wants to spend some quality time together with her viewer, even though it is quite late. Unwilling to let the opportunity pass her by, she allows her viewer to sleep alongside her. Over the course of the night, Hinako offers the viewer a rare intimate look at her various nighttime habits. [Written by MAL Rewrite]
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