Overall great game and i appreciate a really slow burn with aunt, meanwhile you could have fun with your sister, just not to get bored for not m/s or m/a guys, but chapter 9 really bothered me. First - it's too prolonged. Second - your "you screwed it", when ms is trying to confess his love...Not realistic at all.
Aunt: "we have to stop this, permanently, because you should meet other women and i don't want to traumatize you" or whatever.
MC: "You do realize, that after the closest person to me and concurrently, the most beautiful woman in the whole world, is betraying me like that, there is no women for me anymore, right? That i would have no trust for them, or sympathy and there is a good chance, that i will treat them all like garbage? While you're sitting here, on your mountain of high morals?"
That's it.