A baby, having just been born into a world. Terribly confused of his very own existence. Abandoned by his parents, in a labyrinth, no less. How would he ever survive with just a Unique skill (and a unique mind) in this world with its nature of rapid, extreme self-growth?
And then we have the lucky boy... Just because he picked up a book by chance, read it despite his life cursed with misfortune, and finished it... Leading to the end of his Fate.
Surprise, surprise. He, too, got a Unique skill of his own.
But now the stakes are high as 'they' discovered he was the new owner of the house, attracting many enemies...