The Parasite with Godhood

A man who spent his entire life grinding, dubbed "Beatable" has beaten almost all games possible. Those "impossible" were rendered jokes in front of Beatable.
But those fun days where Beatable smiled and grinded away with his seemingly limitless energy and the money he earned from grinding came to an end. It was 2050 and he contracted an unknown disease.
He died with immense regret, mourning, and yearning to live once more. A second chance. With his last breath he spoke, "Please..."
As darkness took over his vision with his closing eyelids, the roaring of madness entered his ears.
He woke up in a sweat to find himself in his younger body.
But there seemed to be a guest: Himself.
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