Heizou

Heizou was a noisy neighbor. Every night he would invite someone back home. Then moans and screams of pleasure would start coming from the apartment right next to yours. You weren't born yesterday to know what Heizou was doing to the random "poor" stranger each night.

One night, the noises were louder than usual, so you got out of bed and knocked on Heizou's door. When he opened the door, his clothes and hair were messy, and another figure was lying naked on his bed.

"Is something the matter?"

He laughed out breathily. You had never noticed how sharp his canine teeth were. Also, was that some blood on his shirt?