Level 0 Demon King Becomes an Adventurer in Another World

Introducing the malevolent ruler, King Valt of the Continent of Darkness. Despite being defeated by a group of heroes, he emerged once again in human form, with his formidable abilities still intact. "I shall begin anew in this realm, and conquer the entire world this time around!" Valt attracts the attention of the acclaimed adventurer, Iris, who becomes his protector as he enrolls at the Royal Adventurer Training School. With his extraordinary powers, he swiftly surpasses his peers and becomes recognized as a "level 0" anomaly. Thereafter, utilizing his skills as an Evil King, he decisively dominates the unfamiliar terrain around him...