Ogottenai yo Enma-sama

In the underworld, the demon king Enma is feared by all for his terrifying appearance and fierce temper. His subordinates tremble in his presence, and even the souls of the dead are too scared to approach him. But one day, a cheerful and fearless young girl named Yui arrives in the underworld, completely unafraid of the demon king. She smiles at him, talks to him, and even dares to correct his behavior, much to Enma's confusion and irritation.

Yui's presence disrupts Enma's usual routine, forcing him to confront his own anger issues and the loneliness hidden beneath his intimidating exterior. As Yui continues to interact with him without fear, Enma begins to question his own nature and the way he has always ruled. Can a demon king known for his rage learn to change his ways, or will Yui's kindness only make things worse?