Saint Seiya (Original Series)

From the introduction: Welcome to the world of Saint Seiya, Jumper. In this world, the Greek Gods (and possibly others) are very real and have been locked in conflict for the sake of planet Earth. Since ancient times, the Saints of Athena have protected the world and intervened in wars and disasters to safeguard the rest of mankind, acting according to the will of their Goddess. In times of great need or impending crisis, the Goddess reincarnates herself into a mortal babe, and the Saints protect her while preparing for the worst. The year is 1986, and the Galaxian Wars Tournament - a battle between Bronze Saints to find one worthy to wear a Gold Cloth - will begin one month from your arrival.