In a parallel world where the Shugo Chara! universe collides with a Gothic mystery, a young girl named Yumi finds herself trapped in a dark labyrinth, where her fate intertwines with the enigmatic Shugo Chara! and the secrets of her own past....

A contestant in The X Factor's Dark Labyrinth is haunted by a mysterious melody, leading her on a perilous quest through a shadowy world, where her past and future intertwine in a haunting tale of betrayal and redemption....