Record of Ragnarok manga volume 13 features story by Shinya Umemura and Takumi Fukui and art by Azychika.

Zerofuku's transformation into Hajun, the legendary berserker of Helheim, has the crowd stunned. Only Hades seems to have any insight into what's going on, and he's more amused than surprised. On the arena floor, Buddha is his usual unruffled self. But when Hajun launches an all-out assault, the enlightened one has to get serious fast! Round six of Ragnarok hurtles toward a finish even the gods could not have foreseen!