The Little Child Who Never Grows Up

A man watched over by fate, and cursed by it as well. As an immortal, he has an infinite lifespan, but also infinite loneliness. Every time he dies, he regresses to infancy. At the same time, the seal of immortality shuts away his memories and abilities, which only slowly return as he grows up again. He must grow freely for a thousand years without dying to recover all his memories and abilities. But who could endure a thousand years of loneliness? Is this a blessing, or a curse?