Responses
Yeah, I love how they portray each character here. They have quite the depth
True, like his friends glamorize his situation right now, for a teenager like him, being attracted to someone pretty like tsumugi would be common, it's also ingrained in his mind that he saw his sister getting SA'd by someone when he was younger. Which probably was also the reason why he feels disgusted thinking of his sister in that way, it's basically a battle of his raging hormones and his trauma while his concern and care for his sister is the one mediating this fight right now.
Pretty complex character for this kind of manga. I don't think he's attracted to her, but the social implication that he should be, keeps intruding in his mind.
So he just remember something traumatic and sexual about her, then saw that she was hiding things from him, then heard someone say that he should be into her, then saw her hurt and I just think his wires got crossed.
Idk, maybe I'm just coping.
This manga keeps switching from infantile to surprisingly nuanced and complex. I'm crossing my fingers for the author, this is their big chance to show what they're all about.