I don't have the time to read through the whole thread RN so I'll just leave some input hoping it hasn't been replied to in-depth by dev:
1 - Paths need more meaning besides just 3-4 different pics. I know that not everything should be a huge dichotomy because splitting paths on and on often leads to unfinished titles due to multiple reasons. But there's should be a more notable variety that makes it feel like you're speaking to an actual persona.
2 - There needs to be a cheating path - as in FMC keeps cheating on MC and he's legitimately too dense to know or plays dumb because he doesn't want to accept it since that would risk his relation with his boo. IDK if I missed it, but starting from chapter 2 nothing ties up as a coherent cheating path, all just seems to turn netorase regardless of your choices and I tried with multiple variations. Mystery NTR is a p big hit amongst the NTR genre.
3 - There needs to be a bit more build up. The build up there is already isn't horrible or anything, but doesn't hit much on the sexual side unless you can get off to just text (or oppositely, unless you just blitz through the text to get the pics you want), men are visual creatures. The reveal being till chapter 2 or maybe even 3 - or making chapters longer (with the option of the reveal not happening and continuing on a just cheating path rather than netorase) would def make this a more immersive, exciting experience.
This game is an unpolished gem, things like a phone based experiences can be platinum for a genre like NTR, you just gotta tune some aspects. Really like it so far, but it can still be much more with what you've already layed out.