I'm a Coffin Bearer

I come from a family of coffin bearers, and I was supposed to follow in my father's footsteps. But because my unusual constitution attracts evil spirits, my grandfather forbade me from handling coffins. At first, I thought he just didn't want me interfering with the family business. Then one day, I went to carry a coffin behind his back. When I returned and found that everyone in my family had been killed, I finally understood: my grandfather had protected me until his dying breath...