Koroshi Ai

Koroshi Ai (殺し愛, lit. "Love of Kill") is a manga series written and illustrated by Fe. It is serialized in Comic Gene.

Plot
Chateau, a headhunter from the organization of bounty hunters, met a mysterious person named Son Ryang-Ha while on one of her missions. After their quite violent confrontation, Ryang-Ha got suddenly interested and asked her for a number. And thus started a game of cat and mouse, in which the hands of the participants are fully covered in blood...