Shiawase Kanako no Koroshiya Seikatsu

Nishino Kanako sure hates her job and is only too happy to snag the first new gig that comes her way. She never expected that her interview would be at an agency for contract killers…or that she’d be really, really good at bumping people off! Kanako doesn’t have a ton of self-confidence, and adjusting to her new life as an assassin isn’t the easiest.
Will she ever earn the respect of Sakurai, her prickly but kinda hot new coworker?
(Source: Mangadex.com)
~~ Adapted from the manga series "Shiawase Kanako no Koroshiya Seikatsu" (幸せカナコの殺し屋生活) by Wakabayashi Toshiya (若林稔弥).