Level up! My Green Caterpillar

Sean Wayne is thrown out by his own family, but the Beast System offers him another shot at a future. Gifted with the power to perceive the hidden potential inside spirit beasts, he picks as his partner a green caterpillar that looks like nothing special. Still, the pair climb the ranks faster than any newcomer before them. Then the caterpillar begins to show a power that the whole academy cannot ignore.