Oh God, I did not mean anything that brutal, more like facials, footjobs etc.
Is there any way to avoid more brutal scenes like that?
As was stated, those are part of the story, so no they're not avoidable. However, there are only around 10 "HAPPY" scenes in the game which has over 300 scenes and only 2 or 3 of them involve anything sexual, and it's very much played to make you uncomfortable, rather than as something supposed to be sexy.
For the most part, the game is lighthearted and has a ton of sweet moments and great humor. The character writing is incredible and it's great at making you legitimately care about the characters. Hell, of my 3 favorite girls, only 1 of them has any sex scenes, and I'm happy about that. Of course, this is a double edged sword since, again, see horror tag. When something does happen to the girls, it hits really hard because the writing is so great at making you care about them.
Highly recommend giving it a try and not letting the horror aspect scare you off too early.