Giver: Fukushu no Zoyosha

Giba ("Giver"), a man who seems to lack emotions for others, and his colleagues work at a revenge agency. A mysterious girl called Teika ("Taker") leads the group. The agency takes on requests for vengeance on behalf of its clients. Their clients range from a woman who is a victim of a marriage scam to the family of a victim killed by a serial murderer.
~~ Adapted from the novel "GIVER" by Hino Sou.