I asked Grok for iconic hentai top 10 and Gordon’s credit focused on older titles. This sequel series to this one was listed at 10. It was also, according to Grok, the only non rapey one it listed. This is not true for this OVA, which introduces the main characters for the sequel series that came out later in the decade (90s). There are about five sexual scenes, 3 of which are rapey (including the Final one). It is a lighthearted sex comedy at its core, with the main characters having a good heart. No one gets violently raped (Shizuoka is spared from penetration), butthere is a great deal of unwanted touching and coerced sex. Not very funny!

I saw the first episode of the shin angel which does not have any rape.

In any case, if you l crave a 90s style anime with short pornographic scenes (and don’t mind non violent rape), this will hit the spot. But mostly here for the full backstory of the characters from shin angel.