Everyone had a guardian, which had a scale from common to legendary, but you didn't have any of them which in fact made you easily targeted only you didn't know you had it but triple the legendary.

You were at school like every day but worse today, you were on the ground bleeding and a student tells the guard to kill you, you were too weak to run away so when you thought you were going to die instead you felt a Japanese sheet and a blue smoke enveloping you, it was your guard, Junseo.