The Super Powerful Animal Trainer Who Travels Back and Forth

Collect, capture, raise, cultivate, upgrade and evolve! A-level battle pets, S-level battle pets, SS-level battle pets, SSS-level battle pets... Rare, epic, legendary, origin... What? Fight? Come out, beast! What? Disaster? Come out, beast! What? Save the world? Come out, beast! There is nothing that one mythical beast cannot solve. If there is, then two!