Koroshiya Hatarakikata Kaikaku

Koroshiya Hatarakikata Kaikaku, known in English as Assassin's Work-Style Reform, is a manga series authored and illustrated by Hakka Kukuzu. The series began its serialization in the late 2010s, emerging within a crowded market of Japanese workplace comedies. It applies the tropes of corporate satire and labor reform movements to the unlikely profession of professional contract killing, positioning the protagonist in a world where even assassins must navigate modern human resources policies and labor regulations.

The design of the series balances dark, violent subject matter with the dry, observational humor typical of salaryman manga. Kukuzu utilizes sharp, clean character lines and understated visual gags to contrast the high-stakes life of an assassin with the mundane stresses of corporate restructuring. The work was received as a witty subversion of genre expectations, gaining modest popularity for its ability to treat the absurd premise of an HR-compliant assassin with a grounded, deadpan sensibility.