My Ribdiculous Reincarnation

女神「異世界転生何になりたいですか」 俺「勇者の肋骨で」

After dying, an ordinary, luckless man finds himself face to face with a lazy, overworked Goddess who reincarnates the dead into new lives, and learns that the popular options are badly backed up. Asking to come back as a Hero with a harem carries a fifty-thousand-year waiting list, so he starts requesting anything with a shorter queue instead: a hero's rib, a hermit crab, a vegetable, even an explosive device. Each bizarre new form becomes its own short, absurd life before the cycle starts again.