There's Harem Colector here in Itch, that has short of the same premise, but in a more satirical way.
I'm making a list of good free NSFW games in Itch.io, here it is: https://itch.io/c/3061262/best-free-nsfw-games
The game listed there beyond and below Renryuu and Harem Colector are mostly RPG Maker games, see if there's something you may like.