My Ribdiculous Reincarnation

Synopsis

"What would you like to be reincarnated as?" A hero with a harem, obviously. Unfortunately, the waiting list for that is fifty thousand years long. So I asked the goddess for the next best thing. "The hero's rib." One ridiculous reincarnation at a time, I'm living every life nobody else wanted. A hermit crab. The dirt outside a dungeon. The demon king's castle door. The right one, specifically.