Dragon Clan: the Nether Demon Starting from Tokyo

[Dragon Clan] + [Armor Warrior Xing Tian] + [Fantasy Battle] + [Daily Love] + [Single Female Protagonist] An Mixiu, the son of Lufa and the captain of the Gray Ming Squadron of the Netherworld Legion, challenged Lufa, the summoner of Shura Armor, Emperor Yan, in order to prevent Lufa from obtaining the Earth Energy Crystal, and tried to prevent Emperor Yan from grabbing the summoner from Xingtian Armor, but was ultimately defeated. After his death, he accidentally traveled to the world of dragons, and met Eri, who had run away from home, on the streets of Tokyo. He gradually learned about the world of dragons and hybrids, and began a legendary adventure of his own. (PS: The timeline is in the fourth month before Long Yi begins, and he and Lu Mingfei are in the same grade.)