Beast Vessel opens with you getting absolutely wrecked by a slime. Not in the fun way. You're the only person in this fantasy world born without mana, which means even the tutorial monsters treat you like a chew toy. The humiliation is real and honestly kind of hot if you're wired that way.
The animation quality is rough. Like, someone learned Blender last month rough. But there's something about the janky way clothes tear off during combat that works. When you lose a fight, and you will lose a lot, the game doesn't fade to black. It shows you exactly what happens to a magicless nobody at the mercy of mana-infused creatures. The voyeurism tag makes sense once you realize half the scenes involve watching other characters get into situations while you're hiding behind a rock or whatever. Classic renpy choice system but the writing has this dry humor that caught me off guard. "Your magical aptitude has been measured at: lol nothing" type energy.
The exhibitionism stuff creeps in through the fantasy setting logic. Public baths, magical "accidents" that strip people, the usual hentai contrivances but delivered with a straight face. Male protagonist means you're the one getting exposed and embarrassed most of the time. There's a scene with a witch who "helps" you by demonstrating proper mana flow which turns into a hands-on anatomy lesson. The 3dgc models have that plastic doll look but the animations during intimate moments have this desperate quality. Bodies move like they're actually reacting instead of just looping through positions.
The masturbation content is surprisingly varied. Since you can't use magic, you find other ways to pass time at the inn. The game remembers your choices in ways that feel consequential even if the branching is probably an illusion. I keep thinking about that one guard captain who catches you and just... watches. Doesn't say anything. The silence is louder than any dialogue.