Sacrifice? No, I'm a Bad Guy

I was a cannon fodder boy who traveled through a world of horror and fantasy, and I was chosen to be the bride of the mountain god. Halfway through the sedan chair, a fierce ghost blocked the way and demanded his life. "The auspicious time has come, please ask the bride to get off the sedan chair——" I lifted my hijab, held the judge pen in hand, and opened the book of life and death: "Don't worry, let me check your longevity and merit first." The mountain god gets married? Have you asked me, the newly appointed civil servant from the underworld? Wait, how does this book of life and death show that the real mountain god has fallen for thousands of years?