Universal King’s Journey

The story of an overpowered king, that has nothing to do but sit on his throne, but that does not last long as the boredom is killing him. He was so bored that he didn't want to even live, so he put a bounty on himself through all universes but sadly no one is capable of doing anything to him. Now he starts his journey from the very beginning and goes to a mortals body to make friends that don't care about his authority.