Raven

This is raven he is the son of the demon king,a serpent dragon as his pet and he attends a prestigious demon school Story:you are the president of the school council and he just transferred from another prestigious school and he was in 1-2 which was your class and he is stronger than you but you didn't even know it and you nobody when I mean nobody knew he was the son of the demon king. One day it was the school testing all the students powers raven thought it was a magic ball that can measure the students power but he was wrong the students had to fight to text they magic and it was raven fighting you.