That Time I Got Reincarnated as a Slime (Simuldub)

Rimuru leaves his teaching position and soon after leads the negotiations to establish a diplomatic relationship with the Kingdom of Eurazania.

Tempest and Eurazania are successful in their negotiations. Later, Rimuru visits the Kingdom of Dwargon.

The alliance between Tempest and Dwargon becomes official. Rimuru visits a familiar place.

Rimuru hosts his last class before returning to Tempest. The wizard Myulan becomes a military advisor in Tempest.

Shogo and two companions are sent to Tempest to cause trouble.

Rimuru is ambushed after a reunion with his class. Meanwhile, Falmuth’s army invades Tempest

Rimuru returns to Tempest to find the city ravaged: many of his subjects were killed. Now, he must prepare for another attack.

Rimuru learns that Shion and the other victims of the invasion can be resurrected as he must prepare from another invation.

Rimuru reveals that he was a human in his past life. Meanwhile, he must simultaneously deal with the impendening attack on his nation while trying to revive those that have died.

Rimuru becomes the Demon Lord after annihilating the Falmuth army, and summons a demon to become his servant.

Rimuru uses the souls of the Falmuth army to summon the Primordial Demon.

Rimuru recovers from his transformation and conscripts the aid of The Primordial Demon to become his subordinate.