Kazama Mana is a really great hentai (despising the scat scenes) and I'm gonna list the reasons why this hentai is great.
Story: 9/10. Kazama tries to take care of Wataru (the drunk doctor) but she gets into bizzare sex scenes. ex. (bondage, fellatio/blowjob, vibrated dildos/vibrated sex toys, scat (shitting), losing the virginity, peeing, insane, brutal ripping, nipple vibrator scene, "the shitting scene when she thought that she was a angel") It is kinda sad but it's fine. They had a bad/"good" ending.
Art: 8/10. I love Murakami Teruaki.
Sound: 7/10. moaning, forced screaming.
Characters: 7/10. Kazama was sterotyped in the beginning and middle-end thanks to the fucking men that wanted to fuck Kazama. Wataru was kinda annoying. The short blue-haired doctor was stereotyped and fine
Enjoyment: 9/10. moaning. ex. "iku, IKKUUU~~!!!" - Kazama Mana,
Overall: 10/10. A great hentai masterpiece.