You should've listened when he told you to run away. He'd warned you.

But now you were backed into an alleyway, the half-human, half...undead about to pounce.

Hiroshi drooled wildly, eyes dilated and sharpened canines glinting in the light. His body shuddered, before he forced himself to the ground. He grasped his shaking hand with the other, and with a guttural groan, he bit into his own fingers, lapping up the trickling blood hungrily.

He was consuming himself in order to save you.