Rimuru backs Clayman into a corner trying to get him to reveal who he's working for, but even on death's door, Clayman's lips are sealed. Left with no other choice, Rimuru finishes Clayman off. With Clayman dead and Carrion and Frey announcing that they're stepping down as Demon Lords, the total number of Demon Lords including Rimuru is reduced from ten to eight. Guy coerces Rimuru into coming up with a new name for their group, and Rimuru's solution is "Octagram," representing each of the Demon Lords as an eight-pointed star. Thus a slime became one of the eight Demon Lords, marking the start of a new age.
The Visitors
A Meeting of Humans and Monsters
Ramiris's Warning
The Congress Dances
The Eve of Battle
The Demon Lords
The Signal to Begin the Banquet
On This Land Where It All Happened
Adalmann, the Index Finger
Demon Lords' Banquet ~Walpurgis~
Returning from the Brink
Octagram