Since folks keep asking how avoidable is the NTR. It's an NTR game. There's technically some routes and strategy that can avoid you getting cucked for the most part, but the sexual focus of Makura Soft is NTR. Like the game even has scripted fights* where you lose to the dude who wants to fuck your girl (and he's programmed to always go after whoever you pursue). You can technically even play in Free Mode and run just parties of women with no MC or any story characters, but playing in that mode disables most sex scenes, since they largely follow the story.
Free Mode is almost more if you just wanted to play their RPG system in a non-porn game.
*technically the fight isn't an auto-lose, but it's stacked heavily against you, and if you do manage to win, either through cheese or cheating, the story continues as if you lost.