It originally began publication as a webcomic published on the author's Pixiv account in October 2018.

It later began serialization on Kodansha's Twi4 Twitter account and Saizensen website in April 2019.

Written and illustrated by Toshiya Wakabayashi, Happy Kanako's Killer Life originally began publication as a webcomic on the author's Pixiv account on October 29, 2018.

The drama is directed by Tsutomu Hanabusa and stars Non and Taisuke Fujigaya in lead roles.

[2][3] The series was ranked fifteenth in Honya Club's Nationwide Bookstore Employees' Recommended Comics of 2020.