Nyu wore the Wind Armor, which was once known as one of the Four Devas of Heaven who saved the world. After the last war, Nyu returned to the temple, found out that the monk who raised him had been attacked by bandits and was about to die. Nyu planned to defeat the mountain bandits, but fell into a despicable trap and was in desperate danger. At that time, Nyu was suddenly surrounded by the "Wind Armor" and gained the power of the Dragon King Heaven, instantly defeated the mountain bandits. And, awakening his mission as the Four Devas of Heaven, Nu discovered that the young people fighting against the Dark Army had excellent qualifications, so he taught aerial warfare techniques and was given the title of Wind.