I Am the Strongest Dragon Hunter on Earth

Coming to this strange world, Rex is determined to become a hero who saves the village until all the cheats are available; Black Dragon Miraboreas: "Me! The war of destiny!" Rex: "The last person who yelled at me like this has become a sledgehammer in my hand." Gandalf: "The One Ring governs all the rings, the One Ring..." Rex: "The Ring! Bring it to you!" Held: "You did a good job, we are going to start the next step..." Rex: "I am the unmasker. When I appear, friends become enemies, lovers become enemies, what am I?" Held: "You!!!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.