Magic: The contracts

Hundreds of years have passed since the last world war with artillery weapons, thanks to the advancement in science and an unexpected discovery near the center of the planet Earth, magic can be used by humans. Mana has been resurrected with Earth and was slowly injected and evolved throughout the years in young people to carry out in their DNA.

Now it's no longer about how much military weapons you have, but the level of magic you can conjure, and it order to have the strongest, families send their kids at a young age to study magic and create a contract with their partners to combine their powers to reach levels far beyond what they can imagine.

But these, contracts aren't anything to be played with...