I found the tone of the intro a bit weird. The headmaster is a great guy. He mentions how smart the MC is and what a great student he's been. He even lived with the headmaster's family without any problems, so presumably he is a well adjusted guy. The graduation music and ceremony tends to bring out certain emotions for most people. Basically, the set up would be quite good for a more serious slice of life game or something. You start it off with positive vibes.
Then you go home and immediately grope your sister in law. Start acting like an ungrateful brat. Etc etc. It just didn't seem quite right.
Granted, I was the one who picked these options, but I am giving my opinion on how the early part of the story feels for a bad MC. The actions he can do and how the story and character was set up doesn't quite match. Unfortunately, it didn't quite grab my attention so I will likely drop the game, but I have a feeling the story would make more sense and have a natural flow on the good guy MC path. Reconciling with your brother and being a great guy who lives up to the headmaster's expectations.
Good luck on the project.
