Traveling Through the Magical World and Starting a Contract with the Dragon Lady

(Magic + no system + multiple heroines + different worlds + time travel + Japanese-style Western fantasy + harem) A young man named Yiliuqi accidentally traveled to this world, this world of dragons and magic. There is no system, no magic, just an ordinary person, and he travels to the Dragon's Nest, which is known as the most dangerous place in the world. No human has ever visited the dragon's nest, and it is said that there is no return. Just when 167 was about to continue exploring, he discovered that a blue-haired girl suddenly appeared in the grass. Yiliuqi couldn't understand what she said. Unexpectedly, the girl suddenly kissed her, and memories of this world suddenly came to her. When he came back to his senses, he realized that he could suddenly understand what the girl was saying, and he also knew that he had traveled through this magical world, and that the girl in front of him was still a dragon. The girl opened her mouth and wanted to sign a contract with Yiliuqi. In exchange, he, a person from another world, would be able to learn magic. Yiliuqi agreed without thinking. In this way, one man and one dragon embarked on the so-called magical journey to another world. He carried a staff, went down to the village, wore clothes, and taught. What will be his final ending?