God I want to like this so much because of the author, but seriously if they don't confirm next chapter that she HASN'T been fucking her brother I'm done this is too fucking much.
I honestly don’t care about that girl. The best thing is that throughout the series Nishina made some genuine friends who share his hobby and can get angry for him. Whatever psychological trauma she may cause will be healed by them
this author usually use same patterns.( atleast his non hentai ones) he show some NTR*like things, but he doesnt go beyond that.so I hope it, they didnt fuck. (poor hope but still)