Substitute Bride of the Abyss

Coerced by her malicious stepsister Victoria, intern Serina signs a substitute marriage contract to pay for her adoptive mother's surgery. Her husband Lucian, feared as a savage CEO, is the pure-blood demon lord of the underworld. Serina's special blood heals his Abyss curse, locking them in a soul blood bond. When her godly bloodline is revealed, multiple dark races hunt her to take down Lucian. Serina awakens platinum divine power to defend him, suppresses the rebellion, and marries Lucian. But their sacred magic stirs ancient enemies from the celestial rift, bringing a new deadly trial for the couple.