Black Ring

The useless body saved the princess. Can he prove his worth to the world? A powerful opponent, a cunning enemy. Can he complete the impossible bet within the allotted time? Black ring! A powerful artifact that can summon followers that are 1 to 100 times stronger than itself. You may summon a giant dragon or a monkey! Every time you complete a summons, you must travel back to the follower's world to help him fulfill his wish in exchange for equal value.