Buster Keel!

Three years ago, Siva, an adventurer specializing in using monsters fought a mighty Dragon Ape and managed to seal him in human form. In the present, Keel is travelling from place to place searching for Siva to force him to remove the seal keeping him trapped in his current state. Hoping to find some clues he approaches Ravi, another monster user, but when she informs him that Siva has been missing for the last two years, it seems that Keel’s search may not be as easy as he had hoped. After discovering that with Ravi’s magic, Keel is able to temporarily unlock his power and transform his right arm back to its natural state, they decide to form a party. Now, Keel, Ravi, her pig-devil companion Mippy and their new acquaintance, the magic warrior, Blue, are setting off on an adventure to find Siva and beat whatever monsters cross their path along the way.