I really like corruption games, and this one especially because there are several characters to corrupt, but I was a little disappointed with the new intro, because it shows that the Uncle, the brother and the father are already corrupted, so it would be no problem for the MC to join in the fun. I prefer it when the MC uses tricks to seduce and corrupt others and as the corruption increases, the characters start to accept more and more things that they wouldn't accept before - like the Young Marcus game -. But that's just my taste.
In the game Young Marcus, as the story unfolds, we end up discovering that some things have already happened in the family as well. At first, we only know about MC's uncle, because he introduces MC to corruption. A game that I think got the right levels of corruption and affection between the characters is The Family's Curse.
Anyway, I'm enjoying the game overall. Do you plan on creating an account on some platform, like Patreon, for anyone who wants to support the development? Although Patreon and some other platforms kind of veto certain content... but the developer of The Family's Curse has an account there somehow without any problems so far.