Yuya's biological parents are dead (Yoko and Yusho) his adopted parents are evil vile people who will ruin the kingdom Yuya wants to stop them but they have all of the people fooled by their act. Yuya talks alout with his brother(or friend still figuring it out) Yuri who helps him. Yuya learns dark magic by himself and shows it when he over throws his father, but he is only able to take half of the kingdom.

    Dark magic hinders the user's own magic this means Yuya can't really use his normal fire magic.

     All magic is different Yuri can heal people Yuya's suppose to be able to control fire and not get hurt by it. Every person has different magic it may be similar but it's not the same (except twins they may have the same magic)