Replica
Alternative title: Replica -????-
Story Overview
Manji, the murderer bodyguard known as Red Dog, joins Cards by chance and helps defeat Toys, a kind of playthings that kill. His weapon is a sword and his partner is Karu, a cold boy capable of transferring others injury to his body. In one mission, Karu is wounded and his secret is exposed. (Source: MangaUpdates)