20 years ago, magic was discovered and the Magic Era began.
Nishiyama Akira is a boy reaching 16, the age when the concept core, an organ that stores magic energy, reaches unstable levels. He holds no expectations as his magic relays have always been weak and his mana is low. But to his great surprise, the evaluation machine ranks his Speculo as S, the highest available rank.
However, he soon receives a greater shock during testing when it shows no effect!
Nonetheless, as an S rank Maestro he is given the right to attend any Maestro academy he wishes.
Selecting the Japanese National Institute of Maestros, the top institute of Japan, his adventure begins.