Yet again, this one is rather similar to another one already posted, however hopefully it will be different enough that that doesn't matter. My idea for this one is to have Ichigo be a death god in Danmachi, but with some twists. First of all, Ichigo lived out his entire life in the Danmachi universe, and he was around back before the gods descended. He ascended to a god temporarily when fighting Aizen, specifically when he achieved Mugetsu, but was demoted back down after using the Final Getsuga Tensho on him. Later, he would go on to face Ywhach, and after that he would become a true god of death and stay that way. Basically, to clear up some confusion, Aizen would be a human trying to become a god of death to bring about death to mankind, and Ichigo had to stop him. In Ywhach's case, he will have already have been a god, but not a god of death. Ywhach will be a god of prediction/Quincy power-sharing that has turned evil after the other gods massacred the ones that he shared his powers with. The reason for this massacre will be that the gods didn't like the idea of a god giving humans their abilities, though ironically this will be the inspiration for falnas in the future, albeit they work in a different manner. Point is, Ichigo will have already defeated both Aizen and Yhwach, however there can be flashbacks of what happened. Ichigo will be the god death that defeated these two threats to the gods, and hailed as a god amongst gods. He will be from the ages before gods descended, and him defeating Yhwach will be how he acquires the Quincy abilities. I don't really know how to incorporate more aspects of Bleach, such as the souls aspect, other Shinigami, Hollows, or Zanpakutos into the story, but I'll leave that to you to figure out, so that you can be creative with that.