Unbound Resort

You play the male protagonist alongside a wife who's into NTR and NTS, and the game doesn't pretend otherwise about where that goes. If you don't already know what those letters mean, the source itself suggests you skip this one.

The story splits into two separate paths, NTS and NTR, with the stated goal of actually developing both instead of treating one as a throwaway branch. That's the whole pitch: pick a lane, watch it play out with some real weight behind it.

Day to day, you're moving through scenes as the husband watching things unfold, sometimes as a participant, sometimes as the one left watching from the sidelines, with the tone shifting depending on which route you're following. It's a mobile-friendly visual novel built around that dynamic rather than around puzzles or stats to manage.