Lu Mingfei: Duwakein Returns from the Sky

Lu Mingfei once thought that his life would only be a failed youth. Until he came to another world. There are dragons, magic, dragon roars, and the power to change destiny. He became a dragonborn, slayed dragons, learned magic, and left his own legend in that world. Then he came back. Kassel College came to him and told him that dragons also existed in this world. It's just that the dragon they talked about was not the same kind of existence as the dragon he knew. This time, Lu Mingfei was no longer the loser waiting for others to choose. He gets to choose his own path.