An old soul starts yet another journey. This time, though, it's far away from home.

He's been around pretty much since forever. Literally.

He had thought the cycle would last until the end of times. It didn't.

Now, he must face a new world he knows nothing of, which isn't quite new. Fortunately, there seems to be magic. Unfortunately, despite being strangely familiar, the System's unbearable.

Please mind the tags! The story's properly slice of life-ish!

The main character is no amoral monster, but he definitely leans closer to chaotic-neutral rather than good, i.e. if you're not okay with a selfish MC, the story might not be up to your liking. Also, consider that 'Strong Lead' here means weak to strong, over a decent amount of time, not overpowered from the very beginning.