Yari No Yuusha No Yarinaoshi

Vol.4 Chapter 17
Vol.4 Chapter 16
Chapter 18
Vol.4 Chapter 16
Chapter 18
The comedy spin-off story focuses on the Spear Hero, Motoyasu Kitamura. At the brink of death he acquires the power to turn back time, and decides that he'll use it to become stronger and start a "new game."