Happy Kanako's Killer Life Vol. 1 by Toshiya Wakabayashi
When Kanako accidentally applies to work at an assassination agency, the timid office worker discovers that she has a knack for bumping people off! Will she ever earn the respect of Sakurai, her prickly and kinda hot co-worker - and why is she still having silly work place problems when she works with hitmen?! This full-colour manga is dangerously funny!