Noir and Eli Clark live in an orphanage together until they are adopted by the prestigious Melodis family. They are taken to a large mansion where they live with their adoptive father, Salvatore Mélodis, and their adoptive brother, Desire. Life in the mansion is strict and severe; the servants punish them harshly for any mistakes. Noir and Eli support each other, with Noir often taking the brunt of the punishment to protect Eli. As they grow older, Desire receives more attention, while Noir and Eli remain in his shadow. After Salvatore dies, Desire becomes head of the family and engages in criminal activities, forcing Noir to obey his orders. Noir's personality becomes colder and more distant, though he remains open with Eli. Noir develops feelings for Eli, but keeps them hidden. Desire also develops feelings for Eli, and is less discreet about them.