MamaYuyu (en) follows the story of Corleo, a young man living in a peaceful world where heroes and demons have vanished. When he discovers a mysterious girl named Yuyu, who possesses the last remaining demon power, his quiet life is turned upside down. To protect his world from being conquered, Corleo must reluctantly become a hero. Readers enjoy the series for its fresh twist on classic fantasy tropes, blending slice-of-life humor with action, and the charming dynamic between the laid-back protagonist and the energetic demon girl.