Others Summon Pets, I Summon Demon Lords

[Western Fantasy + Summoning + Power Fantasy + Academy + Epic] My name is Lin Hanxuan, the only 'genius' at A-Class Magic Academy who can't sense any elements. That's right, a total waste. But I have a secret: I know the lost art of Balanced Summoning. While others summon little animals, I summon the King of the Rot Swamp. While others contract with beginner zone monsters, I tame a Boss-level Insect King. The whole school is going crazy: 'What exactly are you?' I spread my hands: 'What if I told you I'm a waste?' Later, I discover I have another identity. The lost son of the Yang family, Prince of the Thunder Eagle Empire, brother of Empress Misella. And the World Tree's chosen savior.