That Time I Got Reincarnated as a Slime, Volume 4 (by Fuse)

That Time I Got Reincarnated as a Slime: The Ways of the Monster Nation Vol. 4 continues the thrilling expansion of Rimuru Tempest’s growing realm, Tempest. As Rimuru consolidates power and strengthens political ties, he must navigate the complex world of inter-species diplomacy and hidden threats lurking in the shadows.

With the Western nations watching closely, and unrest brewing among rival factions, Rimuru’s leadership is put to the ultimate test. Can Tempest remain a symbol of unity and coexistence, or will greed and suspicion tear it apart? This volume mixes political drama, character growth, and comedic moments with the world-building fans love.

Written by Sho Okagiri, based on the original work by Fuse, and featuring stunning illustrations by Mitz Vah, this spin-off dives deeper into the administrative and strategic challenges of building a nation from the ground up—while retaining the charm and humor of the beloved Slime franchise.