
Yes, Cole is always wearing a wristband when he's outside but by the time they have sex he doesn't wear any, and I find quite difficult to think that Alex has never been aware of the scars, this is why I said it was out of the blue for me. If Cole had some sort of trauma when he was a teenager why never mention it from the beginning but only in the second volume..?
I'm not trying to demonize this manga, and if you like it I totally respect your choice, but in my opinion there are just some hints in the story which make me think that they weren't well planned and that the author may not have a clear idea on how the story should proceed ╮( ̄▽ ̄)╭
Actually I quite don't get this manga.
Until ch. 4 of first volume it was okay, then I had the feeling it went down. I feel like the author just wanted to add casual nonsense elements to deepen the story, she just wanted to touch sensitive topics, for example Cole's wrist cuts, Cole that points a gun out of jealousy (seriously wtf?), the fact that "they will go to hell together". She just changed their character from normal uni students to wicked psycho guys.
Until chapter 4 Alex was like a puppy, then he suddenly changed in to a psycho, and the got back to be a puppy... Like what the hell. The fact that Cole used to cutting himself was just some thing out of the blue. Between volume 1 and 2 seems like some time has passed, how much? 3 months, 6 months, one year... We don't know, just Cole who lost his child-like features and has more mature looks.
I don't want to judge this manga yet, I like the art but I read other manga from this author and in everyone I had the same feeling: the author just has a lot of confusion in her head, wants to create difficult stories but everything just come up all messed up ( ̄∇ ̄")