A shattered glass slipper. A prince left empty-handed. An ancient calamity awakened in the hearth. Banished to the freezing servant's quarters, Cinderella endures the psychological torment of her stepmother, Lady Kiku. But her quiet defiance stirs a dormant, malevolent gravity trapped in the estate's foundations: Ryomen Sukuna. Intrigued by the only human who refuses to fear him, the King of Curses offers her a dark sanctuary. As imperial forces and magical domains threaten to tear her away, Cinderella must choose between a sanitized royal cage and the terrifying, absolute devotion of a god of slaughter.