Her Underworld Billionaire

Logan Locke becomes a Seventh-Rank Officer in the Underworld. His wife, Claire Sullivan, burns spirit money, causing inflation. When King Yama asks to borrow money, Logan gets promoted and protects his wife, scaring away her bullying relatives. He risks his soul to return to the mortal realm. He forges the Ring of Yin and Yang to return for good, spending his life with Claire Sullivan.