Responses

SPOILER
So he is kind of taking advantage of the opportunity that he likes his sister and “teaching” things that his sister likes in a guy , but he isn’t just playing with him he really fell for him
Now dong woo is falling in love w him too and going for it ( ̄∇ ̄") but the other one is like oh not he doesn’t like me he likes my sister ( stupid #-.-) but yeah ....
That’s basically it
https://bananamecanica.com/love-leveling-capitulo-20/