Kaijin no mahoshi to Mado-senkan (GA Bunko) [Light Novel]

[Machine Translation] I am a survivor of the Iwo Jima tragedy. Koukoku, a nation similar to Japan that developed based on magic, is at war with an army that came through a distortion of time and space. They are called the Imitators, who deal with weapons that do not exist in this world. Makoto Sakira, a boy who was captured by the Imitators, returns alive after gaining a powerful magical value from their experiments. Thinking that there is a traitor in their midst, Makoto re-enrolls in the Maritime Academy. In order to protect the world and put an end to his past, Makoto searches for the traitor. A mysterious girl named Yamato appears before Makoto and asks for his help. Another world is being invaded by modern weapons. The school battle magica of a boy who has the power to burn everything to ashes begins!

「俺は『硫黄島の悲劇』の生き残り。スパイ疑惑をかけられている」魔法を基盤に発展した日本によく似た国家、煌国は、時空の歪みを通り抜けて来た軍隊と戦争状態にある。この世界にない兵器を扱う彼らは模倣人と呼ばれていた―。模倣人に捕らわれていた少年、咲良誠は、彼らの実験で強大な魔力値を得て生還。裏切り者がいると考えた誠は、海上学園に再入学する。世界を守るため、過去に決着をつけるため、誠は裏切り者を捜す。そんな誠の前に、ヤマトと名乗る謎の少女が現れ、助力を求めてきた。現代兵器に侵略されている異世界。全てを灰燼と化す力を得た少年の学園バトル・マギカ開幕!