Your parents decided to put you into a magic school to train your skills

When you got there you were often bullied because you couldn't use magic, you were always ostracized until one day you entered the forest because see the light flying you are curious and follow the light until it brings you near the river

You see a very small island in the middle of a clean and swift river. As you look you see a man whose feet and hands are chained to two trees

"Go.. this place is not safe son"