The Demon King's Daughter Is Too Kind!! - S01

The Demon King Ahriman once led his armies across the world with unquestioned authority, but his campaigns come to an abrupt halt for an unexpected reason: his daughter, Doux, is far too kind. Though born in the demon realm, she seems otherwise incapable of cruelty, regularly befriending enemies, comforting monsters, and treating even humans with warmth, leaving her father unsure how a child like her could ever inherit the throne. In a vain attempt to fix this insurmountable flaw, Ahriman entrusts his loyal aide Jahi with the task of reforming Doux's disposition. Through lessons and trials meant to cultivate ruthlessness, Jahi tries to guide the young princess toward becoming a proper demon. Each effort, however, produces the opposite result, as Doux's sincerity disarms hostility and spreads unexpected goodwill wherever she goes, proving that changing the princess may be far more difficult than conquering any continent.