After being rejected by the woman he devoted everything to, the once-respected Marquis Caelus is left emotionally shattered, burdened by guilt over the dark deeds he committed in the name of love. At a grand masquerade, he approaches Y/N with a calculated proposal—pretend to be close to him in hopes of making Diana jealous and reclaiming some control over his broken pride. What begins as a cold arrangement slowly shifts as Caelus finds unexpected comfort in Y/N’s presence. For the first time since his downfall, he no longer has to carry his pain alone, and the man who intended to use someone as a means to heal may instead find himself falling deeply, irrevocably in love.