Where will we go after we die?
One of the main questions that is incredibly difficult to answer relying solely on human intelligence. Even Moku himself couldn't provide an answer.
He might be able to answer that when someone dies, they will be reincarnated into another world, just like himself. However, this wasn't the right answer because Moku himself felt that something had happened before he reincarnated as an orc.
Coupled with Garuda's words, stating that he was the Soul of The Old World, it indicated that the world in which Moku currently lived was not the same as his previous life. He didn't reincarnate into a planet within the same universe as his previous world, but into a new world, a new time, and a new universe.
That meant Moku's previous world and everything within it had been destroyed. So why was it only he who reincarnated? Or perhaps it wasn't only him who reincarnated, but he was the only one who remembered his previous life. However...