In a world where magical affinity is reflected in the color of one’s hair, Chloe was born with snow-white hair, marking her as a “Colorless,” someone incapable of using magic. As a lowly errand girl for the mage corps, she spent her days doing menial work. Then one day, through a sudden accident, she collides with Raynor, the feared “Black Mage,” and the two end up kissing. In that instant, Chloe’s once white hair is dyed with color, and she releases magical power she was never supposed to have. Shaken by this unexpected awakening, Chloe is then ordered by Raynor to live with him as his fiancée. Bewildered at first, she gradually finds herself drawn to the mysterious mage…?