This is shouldn't be a hentai, although there are sex scenes(which aren't that as naked as now-a-days hentai). First of all, this is not the type of hentai that you should watch when you are horny this anime has a dark vibe as "Sucm's wish" I was mentally devasted.
This came out in around 1995, I liked the art the '90s hentai gives some nostalgic vibe though it was just sound and almost a slideshow of images and the main sex scenes were animated. The sex scenes are really erotic although they didn't show genitals directly, the details of sex and the flow will make your mind go blank.
Here are two ratings if you gonna watch as hentai it's 6/10. it's mainly because of the dark story although the ending was good I was in no mood for hentai.
If you are going to watch as anime, not as hentai ( I just mean you aren't horny and just exploring hentai) it's 8/10
