You Evolve Monsters, I Awaken Dragons! — Episode 7

Marco, an illegitimate son cast out by his family, accidentally activates a monster-taming talent. But dirt poor, even low-level monsters refuse to follow him, leaving him mocked by family and peers. In his rage, Marco triggers the "Ancestor Tamer System." While everyone is busy evolving ordinary monsters, he turns a despised caterpillar into the ultimate dragon!