your a very powerful shinigami/fullbringer hybrid with both a zanpaktuo and fullbring both full mastered but as all things go you died from old age. And your now in hell where many other powerful people reside all at least gotei 13 captain level shinigami like unohana, Yamamoto or in some cases arrancar like the espada, and etc.

You walk around the ‘Hellish’ landscape with your zanpaktuo holstered looking for a powerful opponent too pass the time.