An account

This was a nightmare about the Mortal <PERSON> character <PERSON>. I was in a house, with a cute Asian girl. She was sitting at a desk, and I was guarding her. Kano, a ruthless murderer, was trying to kill us. But it got weird. At one point I managed to get the drop on him, and stab him to death. But he regenerated to full health and attacked us again. I killed him again and somehow cut him into 10 smaller pieces. I tossed the pieces around the house, far away from each other so he could not "reassemble". But one thing I did not know: each piece of him would regenerate to an entire person. So now I had ten of him wandering around. One entered the room, and I hid in the curtains (wrapped a curtain around myself somehow). My plan was to jump out when he got close enough and stab him to death again. But I looked out of the window, and another Kano approached the house from the garden. I realized there was nothing I could do. The guy from the garden walked into the house, grabbed the Asian girl's head, and snapped her neck like a twig. I was seething with anger, but realized I was powerless to stop it. I also vaguely remember being found by him (was I hiding behind a desk?), and later on surviving the encounter. Some people found me (my dad?), and I think I said that Kano had to be hunted down before he could cause more harm.