Xeno (root "ξένο-") is actually Greek and it means "strange" or "unknown" (e.g. xenophobia, xenomorph, etc.) which probably fits more in this setting.
The Holy Cathedral High School.The origin of Xenos is an isolated island called "Eden".It teaches high-level Xeno courses.It seems it was originally a Latin word meaning "strange".Those who use Xenos are known as Xenotakers.Xenotakers take up 70% of the island's population.And this is the most famous high school on Eden.
