The Barsburg Empire's Military Academy is renowned for producing elite soldiers who bring victory to their nation. Zaiphon, a powerful fighting ability, is freely utilized by the students, with the type of Zaiphon varying based on the soldier's nature. Teito Klein, a sklave with no recollection of his past, is among the most promising soldiers at the academy. Despite being mocked by his peers, he develops a close friendship with fellow student Mikage. During final exam preparations, Teito uncovers a disturbing secret linked to his past. His attempt to assassinate Ayanami, the high-ranking official responsible for his father's death, results in his imprisonment. Left with no alternative, Mikage helps Teito escape. Seeking refuge at the 7th District Church, the bishops provide him with sanctuary. Determined to rediscover his past and uncover the truth behind his identity, Teito evades Ayanami and the Military's grasp to find the answers to his questions. [Revised by an AI Writing Assistant]