here are a couple of my favorite games that you might like. note: none of them are quite the same as this one and all meet your standards in very different ways.
all studio clymenia games have very similar premises and gameplay loops to this game. lots of them are professionally translated by kagura games. while all of them are inferior to this game imo, some come close.
Detective Girl of the Steam City,
Liz -The Tower and the Grimoire, and
The Nobleman Retort are my personal favorites from them.
Karryn's Prison is another absolute gem. it's still in beta, but there's already a lot to enjoy. it has basically everything this game has in terms of sex acts, but with the added option to avoid literally any kink you're not into. it's an exclusively gameplay focused rpg where even the defeat scenes are done using the battle system. the corruption can happen as slow or fast as you want. or not at all. few h games have as much freedom.
Marle - The Labyrinth of the Black Sea is also very similar to this game. it has an near identical premise, but opposite gameplay. unlike this game, where you find most scenes in the town and items in the dungeon, most scenes are in the dungeon and items are collected in town. like karryn's prison, most sex acts occur in battle, but the system is much simpler and there isn't such a heavy focus on corruption.
finally, i have to suggest
Wings of Roldea. it's a very well made game. hard to describe in words. it's an arpg featuring pleasure corruption, gang bangs, fully customizable clothing, and an astounding gameplay system. i often find myself going back to play it like a normal game. avoiding h scenes is just as fun as getting all of them. i promise hours of fun, and many faps, if you choose to play this one.
if you want some suggestions that aren't rpgm/wolf, just ask. i have a lot more and would love to discuss.