The Strongest Biosphere in All Worlds

My name is Qianfeng, recognized by the earth as the strongest creature on the surface, living a high-end, luxurious and happy life. But one day, I met a girl, and from then on I embarked on a path of no return. You said that you were humming songs while driving off-road, drinking champagne and eating meat, living in a villa and sleeping in bed, and suddenly someone tricked you into the central world and asked you to save some world. She said: It was fate that made us meet. You are the eight millionth warrior selected by the Central World. I asked: What is your name? She said her name was... Sai! Korea! Crown!