There is only a sharp intake of breath when Tseng pops his lip, blood pooling in the corner of his lips and coating his tongue. He lays still for a moment as Tseng's fingers trail down his throat, his eyes never leaving Tseng even when he feels Tseng carcass an artery or press down on his windpipe.

He knows exactly what Tseng is capable of but there isn't any fear in his cold eyes. He only indulges Tseng for so long before he shifts his weight, hooking a leg against Tseng's hip to roll them over without warning. Blood drips from his lip onto Tseng's chest but he doesn't make any attempt to stop it. He thought it rather suited him.

"I don't need you to teach me that," he growls, grabbing Tseng's hair once more as he leaned over him. "I've changed a lot since that night when I stood with you on the rooftop that night."