Responses
It was definitely a realistic situation (although generally rare). Usually it's just 'I'll cure you by loving you' or 'I can make up for my wrongs because I'm nice to you now' in BL. With this, the messy part is still there and not just 'magically gone' because he was saved or something.
The victims and perpetrators responses (in my limited knowledge) are realistic, like someone said unfortunately stuff like this does happen, so I do like that about this manga, ESPECIALLY how in the end it shows the MC isn't actually happy, he's just hurt and learned how to mask better
I COULD be wrong and I could be over analysing/giving the author too much credit, but I actually don't think it was rushed at the end or that it took a sharp turn, I think the MC was in a VERY dark place and he got better but he was no where near healed. I think he really did just learn how to mask better (partly for his dad and a little for his friend), he's able to "function in society" now but u can tell at the end that he's consumed by guilt, convinced himself that he likes his abuser, and not actually happy
THAT SAID, AHHHHHHHHH I WISH IT DIDNT END LIKE THAT!!!!!! I really wanted MC to get better, I wanted MC and the step bro to never see each other again, I wanted the step bro to get the help that he needs and also be held accountable, wanted the best friend to grovel a bit more (MAYBE get with the MC), I WANTED THE MC TO BE HAPPY!!!!!!
sidenote: sorry mom character, I thought u knew what was going on so I STRONGLY disliked u, but now I see that she DIDNT actually know what was going on and actually tried to help when u found out, also LOVE how the author was like "helping ur friend is great and all, but sometimes ppl need professional help" (obvi this was a bad example, BUT STILL ADVICE IS STILL VAILD!!)