Chapter 1: I’ve had enough of dying from overwork, so…

Tensei Kizoku no Bannou Kaitaku Kara ~"Kakudai & Shukushou" Sukiru wo Tsukatte Itara Saikyou Ryouchi ni Narimashita~

This chapter is listed on MangaDex, but the readable pages are not available through the internal reader. It is only available through the official publisher link.