Yeah, im surprised everyone is this shocked by the development, because the hints in the previous flashbacks were not subtle by any means, and made it pretty obvious that rape was involved.
i mean this it was kind of obvious that this happened to him, not to mention, kid trafficking was very normal in those days. i think its just you people are sensitive as fuck. i mean, there were very clear signs that he was some sort of sex slave or hostage. well whatever,if your too 'traumatized' to read, youre welcome to leave and not come back.

I AM DUMBFOUNDED. JUST PLAIN TRAUMATISED. Now, I love this manga but isn't Toboso Yana taking this a bit too far? Oh my goodness gracious me. This just crossed the line for me. I can't believe she'd take it this far !Σ( ̄□ ̄;)