レナは士那乃に入学するとすぐに、あらゆる科目で同級生を一瞬で追い抜いていった。圧倒的な速さで飛び級を繰り返していく彼女。あらゆる試験を、その明晰な頭脳と知略で一瞬で乗り越えてしまう小さな天才少女。やがてレナは他の少女たちと隔離され、孤独に勉強するようになる。彼女の存在が他の少女たちの学習意欲が削ぎかねないという理由もあったが、それだけではなかった。レナの行くところにはいつも、暴力や混乱、痛みがつきまとった。だからレナは一人にしておいたほうがいいのだ。彼女自身のためにも。

Knowing her Gift, no one was surprised when Reina quickly surpassed her classmates in every academic subject. They promoted her from second grade to sixth within three months at the Academy, then sent her directly into high school a year after that. Nothing seemed to challenge the sharp little girl, who burned through every exam with masterful finesse.

Soon, Reina found herself studying on her own, taken out of the other girls' classes entirely. This was in part to spare them the pain of being so thoroughly bested, but that was not the only reason.

The teachers had noticed that tears, fights, and chaos followed wherever Reina went. For everyone's sake, it was better to keep her alone.