This Isn't How You're Supposed to Be Reborn

You have to hang yourself to be reborn. Other people's rebirth: a System, divine gear, and dominion over the world. His rebirth: hanging himself over and over. The instant he hangs himself, every living thing nearby dies. The good news is that he gains all the abilities of whatever dies. Unfortunately, they’re all EL, the most useless rank. Want to get stronger? Then hang yourself again. Find a quiet place where no one will disturb him, and hang himself. Each time he hangs himself, another crack appears in the Navel of the World. His teammates think he’s just killing himself in public. Only he remembers that he’s saved these people many times before. The demonic meridians are withering, and the Navel Tree is bleeding.