Tensei Shitara Slime Datta Ken 2nd Season

Taking a break from his time as a teacher, the powerful slime Rimuru Tempest returns to his kingdom, Tempest, just in time to begin negotiations with a nearby nation, the Kingdom of Eurazania. Although the negotiations are anything but peaceful, Rimuru is successful in achieving a successful result.

Rimuru then sets out to return to Tempest permanently, but is stopped by a mysterious figure who can restrain the many magical abilities at his disposal.

Back in Tempest, an even bigger problem has arisen. A group of unknown humans have invaded and are attacking the citizens, both influential and innocent, and have intent to kill. Rimuru must act quickly to overcome his powerful and dangerous foe and return to Tempest before it's too late.