Welcome to Demon-School! Iruma-kun
The End of the Harvest Festival
S3 E16:
Orobas is defeated and Iruma and Clara are kept safe, but Asmodeus is forced to resign due to a rule violation. After Iruma and the others see Asmodeus off, they suddenly realize Orobas has disappeared. The Pot of Ending must be recovered so the Legendary Leaf can bloom, however, there are no clues to follow. In the midst of this predicament, someone appears before Iruma and the others.