Really enjoyed this so far through Season 2. My incest kink is definitely bro / sis, and I don't think I've seen another dev do it this well, or at least make a game that has this much potential (since we haven't seen the ending yet and are only about halfway through the game) - most games I've played with this incest angle move too fast with the pace to where it completely destroys any semblance of realism - for something like this to happen, you've gotta have the siblings maybe start off not being real close, but gradually get really close naturally, and then have a romance develop out of tough, emotional situations where the sister sees the brother as a guy she could never find a better husband than and who she views as a provider and this game nails that aspect.
I have really enjoyed seeing the relationship progression with the sister from the beginning where she's low-key shaming him for basically being a lazy bum (although to be fair she has her issues, too, I'd like to see the MC clap back a little more effectively sometimes to make sure he's not simping too hard - women like guys who stand tall and don't always give them what they want) and he gradually seems to be working toward a better reputation with more self-confidence. Getting a job, making some $, going to the gym, helping with the house himself, etc. Would love to see him get bigger and more muscular at the gym, I've seen that comment in a few places and I think it would be great for development of the character + crank up the desire of the sister (or mom if you're romancing her) since even through S2 she's kind of teasing / fighting the attraction still.
That song in the game called "I Can't" by Tyler Ashley (great song btw - dev did a great job with the music in the game) I feel like almost sums up the Season 1 & Season 2 premise as a perfect theme song.
Something else just as a suggestion for the dev for consideration would be to think about trying to add more characters into the game - and I don't mean LIs, but more like having fellow students of Tris around by having the MC have to be more involved at her school, for whatever reason, picking her up from activities, etc. as when you have more situations where there can be awkward interactions where maybe friends, other guys, etc. get the impression that the bro is her bf or where maybe a friend of Tris's is constantly hitting on the MC because he's a well-dressed successful dude driving a nice car, etc. will constantly become a reminder of his value to Tris, etc. I'm probably not articulating this very well, but hoping you get what I mean - additional characters can help with "creating situations" that then can help progress the emotional development between the characters really well.
Keep up the great effort, dev. I bought the game on Steam, and will happily buy Season 3 once it's ready.