Is Cream Lemon hentai?
Yes
Rated Rx (Hentai) on MyAnimeList.

OVA · 1984 · 38 episodes · Rx - Hentai
Comedy, Fantasy, Hentai, Parody, Sci-Fi
A collection of short stories, ranging from soap opera (the Ami series) to fantasy (Rall series) to horror (Cream Lemon Dark) to parody (Pop Chaser). It does deal with a lot of heavy perversions ranging from S&M, male rape (by a bunch of females, that is), bondage, torture, yuri (lesbian love) and incest. (Source: AniDB)
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