Seiken Tsukai no World Break 1 (GA Bunko) [Light Novel]

[Machine Translation] I had a feeling I was going to meet my brother! Satsuki, a girl who is a princess swordsman and has memories of her own sister whom she pledged her love to in a previous life, and Shizuno, a girl who fought together as a witch in the underworld and stood by her side in another previous life, "My lips...you don't remember, do you? Moroha, the boy who has crossed the cycle of reincarnation and is reunited with his two loved ones at the same time, is caught between Satsuki and Shizuno, and he is in a very vulnerable position. Moroha awakens for the first time in history to the power of his two previous lives, "Kensei x Shizuno", and begins a destiny that is more special than any other. This is a school Sword & Sorcery with the resonance of the previous life that saves the two beloved ones who are bound by an eternal bond. In my sword, the magic flame - Now, the boy will cut through the turbulent world of today.

「兄様に会える予感がしてたの!」前世で愛を誓った姫剣士にして、実の妹の記憶を持つ少女・サツキと、「私の唇…覚えてないわよね」別の前世で隣に寄り添い、冥府の魔女として共に戦った少女・静乃。輪廻を越え、愛する二人と同時に再会してしまった少年・諸葉は、サツキと静乃に挟まれて大弱り!?そして、前世の記憶を力に変える転生者達の学園で、史上初めて二つの前世“剣聖×禁呪使い”の力に覚醒めた諸葉は、誰よりも特別な運命を歩み始めた。永遠の絆で結ばれた最愛の二人を救う、前世共鳴の学園ソード&ソーサリィ。我が剣に宿れ魔焔―今、少年は波乱の現世を斬りひらく。