Regret Asylum: the Fixer

Our Feng family has been running a grocery store for generations, selling groceries on the surface, but secretly doing a life-threatening business of repairing "regrets"! It wasn't until my little sister was swallowed up by regret and there was no trace left, that I was forced to face the dark side of the world: the hatred of annihilating my ancestors, the hatred of destroying roots... And that superior existence actually turned my closest relatives into the cornerstone of maintaining it! I picked up the fragment of the genealogy from the ashes, and it was stained with bloody words: "My family has sinned so much that we can only use our bodies as fuel and burn our bones as torches to make up a way for the common people!" - Only loss can be unforgettable; only repair can we get some justice from this fate...!