Are Magicians Weak? What Does It Have to Do with Me, the Dragon Slayer?

Chen Yu traveled to a world where everyone awakened to their profession at the age of eighteen. Some people awakened the S-level elf saint, shining brightly; some awakened the A-level mad swordsman, and they were full of energy. It was his turn - the purple-gold beam of light shot into the sky, and he turned out to be a "waste professional" magician who had been cursed by the devil for hundreds of years. The whole school burst into laughter: A magician will never be able to break through the third level in his life, so he will rub fireballs until he dies! The next second, the system comes. [SSS-level magician detected, transformation begins...] [Transformation successful: Dragon Slayer (only SSS level)] Fire Dragon, Iron Dragon, Heavenly Dragon, Thunder Dragon [Please choose your initial dragon-slaying magic——] Chen Yu looked at the "Fire Dragon" option in front of him and smiled: "Instead of choosing Fire Dragon at the start, should I choose Iron Dragon?" Being laughed at? One punch delivers 985 critical hits. Bully looking for trouble? The Red Lotus Fire Dragon Fist taught him how to behave. The school beauty looks sideways? The score of 10,000 points in the joint examination directly broke the record. "You say magicians are weak?" Chen Yu moved his fists, and the flames crackled. "That's because you have never seen a dragon slayer."