Thank you for your time i have to say that dev did a big mistake plot wise as he could just do the rational thing and show her masturbating or blowing that old goat rather than jumping over any build up and making sister go for hardcore bestiality with that old goat from the very start.
In my opinion if he had anything planned about the plot sister scene would have been used as punishment mechanic like after game starts mc is able to listen in on father and sister talking about sexual favors for money and after that mc can ask her about doing those favors with him instead of father thus we would have to make enough money weekly to pay her else father gonna cuck us
Simple idea yet dev didn't even think about it and as much as i like the art devs blunder with one~chan just like u guys already said here it won't be easily forgotten i srly don't get it what is so hard at making first version look like "
A New Life in Submission" it sure has annoying slow transitions but otherwise it already has very fundation of characters and their near future covered with dev ideas.