Maybe with her, he felt life will never be bored, there will always be something that will make his life enrich with lively things.
"I think the time has come," He muttered to himself.
This soul world is his world, and from the start, he has been here, he doesn't know how, many centuries have passed, and he never went out of this world, even though he was allowed to go through reincarnation like normal souls, but he never did wants to, because he didn't felt necessary, or there wasn't anything that was attracting him to go human world.
At first, he felt curious about reincarnation, he found joy in the cycle of reincarnation where people will go and come, and this cycle went on every day, seeing the same thing he felt bored.
Once he also went in that cycle, but in the world where he went, he didn't find anything that could hold him there, also something was there but that didn't live up to his expectation, then he again came back to his own world.