Maryoku Zero no Ore niwa, Maho Kenki Saikyo no Gakuen wo Shihaidekinai...... to Omotta? 5 (MF Bunko J) [Light Novel]

[Machine Translation] Grandis Lane Magic Academy, where only noble maidens who can wield the "Divine Spirit Magic Sword" can attend. The school is now in a disastrous state due to the invasion of the "outside world". However, Ubel, the only man on campus with zero magic power, would not just sit back and wait for the threat of the outside world. And Ubel, who protected Tiri, unexpectedly loses her memory! What will the girls do in the face of such a hopeless situation? Lilia is my brother's beloved" "My true love is Henri" "Wow, me too! "Me too!" "I'm a lover of your brother! This is the fifth and final chapter of the heroic tale of a former prince who uses everything but magic!

“神霊魔剣”を操る貴族の乙女のみが通うグランディスレイン魔法学園。そこは今や“外界”の侵攻で惨憺たる有様だった。しかし魔力ゼロにして学内唯一の男・ユーベルは外界の脅威をただ座して待つはずもなく―「こっちから外界に行こうぜ」意気揚々と乗り込んだものの、待ち受ける一三階位の圧倒的な実力に追い詰められてしまう。そしてティリを庇ったユーベルは―まさかの記憶喪失に!?絶望的な状況を前に少女たちが取った行動は...「リリアはお兄様の最愛の恋人です」「本当の恋人はアンリだから」「わーわたしもですっ!」まさかの恋人宣言!?魔法以外なんでも使う元王子の規格外英雄譚、これでも最終章の第五弾!