Because of a Diva governing summoning Magic awarding a stigma, the Sword Division’s expert – Kazuki entered the National Knight’s Academy’s Magic Division. Even though he should be honing the sword skills inherited from Hayashizaki-Ryuu, Kazuki began his unsure Magic training in the Magic Division, which was filled with girls. As Kazuki’s sister, Kanae, the current student president of Sword Division, was extremely unsatisfied about Kazuki entering Magic Division to study. And the Magic Division Student President was overly close to Kazuki made Kanae extremely unhappy——? Kazuki stands inside the crevice between the two conflicting Student Presidents! With the proof of a Summon Magic User – Stigma, the academy’s battle arena targeting both Sword and Magic, is about to begin——!!