What the hell is wrong with his sister wearing so small clothes... It's on purpose? Even blood related brother might go down the wrong path with that kind of sister...
I mean the girl is litrally forcing herself into you so do you really need to care that much? on the side note, I like how the mc don't even question the sister's outfit
Idk but I really find those stuff about molesting really disgusting whether it be fiction or non-fiction. There can never be a justification for those kinds of things.
This is why I love manga. No matter what kind of person u r, u can find inspiration from just about anything. Doesn't matter what kind of person you are, there's always a manga for u.