Open your eyes your right hand has an extra mouth. What is this situation? The good thing is, this mouth is very powerful, swallowing items, can make the right hand into various forms, sharp blade, war hammer, flying ...... upgrade items, so that the bike into a motorcycle, clothes into armor swallowing enemies: get the enemy's genes, get each other's abilities. Hunting monsters in the city, hunting enemies in the battlefield. Make people who care about you happy, and make people who hate you lose their nerve.