That Inferior Knight, Level 999

Synopsis

His father is a sage and his mother is a martial artist... Yuan is a boy whose parents are the strongest humans in this world and they raised him making him believe he's "weak." However, he can pulverize giant rocks with a flick of his finger and he hunts and eats dragons, believing they're just "lizards." His daily life isn't normal at all!! If you're raised by the strongest, it's only natural that you're going to be the strongest too. This is the story of a peerless boy who knows nothing of the world but he's about to shake it!! (Source: Square Enix)