Melmu is a character from the anime series 'Yuuki Yuuna wa Yuusha de Aru', also known as 'Yuki Yuna is a Hero'. The series follows a group of girls who become magical heroes to protect the world from mysterious enemies known as the Vertex. Melmu is a mysterious and enigmatic character whose true nature and motives are initially unclear. She plays a significant role in the series, often providing guidance and crucial information to the main characters. Her presence adds depth and intrigue to the story, contributing to the overall narrative development.