Attack on Titan. Before the Fall

"Cut alive from his mother's womb after she had been eaten by a rampaging Titan, Kuklo has spent his entire life in chains as a freakish curiosity and a feared abomination. Eventually the boy they call the 'Titan's son' finds himself sold to wealthy merchant Dario Inocencio as a plaything for his cruel and ambitious son Xavi. Kuklo knows nothing but abuse and neglect but help may come from the most unexpected place" --