The blonde is tied and weak compared to him. He holds a sharp knife and in his anger he cuts her tit open, making it bleed and ruining her nipple in BDSM artwork.
The deeply dark and scary BDSM comic shows an angry man and a submissive naked girl in his possession. His sharp knife is used to cut her tits open when she upsets him. The close up shows a genuine gash and blood dripping as she streams from the insane pain that rushes through her body. It’s dark stuff.