[ Text ID: 320127 ]

Chapter of Memories: The only daughter of Raiden Ryoma, former CEO of ME Corp. She was raised under strict rules, and took sword fighting lessons in the Hokushin Ittou-Ryuu technique from her private tutor, HOMU Blader. Studied in Senba Academy, where she was very popular due to her background and charming face. After her father was arrested, her classmates began to shun her, which caused a shift in her personality. Eventually, she turned into the Third Herrscher during the Third Houkai Outbreak, with the power to control lightning. She was able to become human once again after Kiana absorbed the Houkai Energy in her body. According to reports, most of the Anti-Entropy branches distributed in Nagazora had something to do with her—perhaps there were other reasons why she transformed into the Third Herrscher? After fleeing Nagazora, she joined St. Freya HS with Kiana, becoming part of Valkyrie Squad 5. At the end of the Chapter of Memories, she became a Herrscher, but was unable to stop Kiana from destroying the world.
Chapter of Rebirth: As in the Chapter of Memories, she still hailed from an influential background. She was captured halfway when attempting to escape from Nagazora alongside Kiana and Kyuushou, and was taken in as a test subject by Doc, an Anti-Entropy Executor. Later, she was saved by the Shicksal Valkyries and brought to St. Freya Academy. The Herrscher Gem of her is the core item to change Kiana into Herrscher. She was always be with Kiana and support her after St. Freya HS was destroyed. Doctor likes her best in Anti-Entropy.

追溯篇：是ME社前社长雷电龙马的独生女。自幼受到十分严格的家教，同时随“吼姆剑客”学习名为“北辰一刀流”的家传剑术。就读于千羽学园，因其出身和外表成为学园中的名人。在其父被捕入狱之后人际关系出现变化，致使其性格转变。在第三次崩坏爆发的时候成为了第三律者，能力是操控雷电。因体内的崩坏能被琪亚娜吸收而恢复到人类形态。情报显示逆熵在长空市的大部分布置都是与她有关，可能她成为第三律者这件事另有隐情。后离开长空市随琪亚娜一同加入圣芙蕾雅学园，作为女武神服役于女武神第五小队。在追溯篇的结尾律者化，但未能阻止琪亚娜毁灭世界。
新生篇：同追溯篇的出身一样，在跟随琪亚娜与九霄逃离长空市的时候被擒，并被逆熵执行者博士作为实验研究对象进行研究。现已被天命女武神救出，并一并被带往圣芙蕾雅学园。其身上的律者宝石是让琪亚娜成为律者的计划中的核心物之一。在圣芙蕾雅学园被毁后一直呆在琪亚娜身边，支持琪亚娜。在逆熵内深受博士喜爱，而且了解到父亲雷电龙马仍然健在的消息，心里放下了一块石头。

追想編：ME社の前社長、雷電龍馬の一人娘。幼い頃から厳しくしつけられ、「ホム剣客」から「北辰一刀流」という家伝の剣術を習う。千羽学園にいた頃は、その出身と外見から学園の有名人だった。父が逮捕・投獄されてからは人間関係に変化が生じ、性格も変わってしまった。第三次崩壊が爆発したとき第三律者となる。能力は雷を操ること。体内の崩壊エネルギーをキアナに吸収されて人間の姿に戻った。情報によれば、ネゲントロピーが長空市で準備していたことはほとんど彼女と関係がある。彼女が第三律者になったのには何か隠された事情があるようだ。長空市を離れた後キアナと一緒に聖フレイヤ学園に入り、戦乙女として戦乙女第五小隊に所属する。追想編の最後で律者化したが、キアナが世界を滅ぼすのを阻止できなかった。

新生編：追想編と出身は同じ。キアナ、九霄と一緒に長空市から逃げ出すときに捕らわれ、ネゲントロピーの執行者・博士の実験研究対象となった。現在は天命の戦乙女に救出され、一緒に聖フレイヤ学園に連れてこられた。

추상편: ME사의 전 사장 라이덴 료마의 외동딸. 어릴 적부터 엄격한 교육을 받으며 「호무 검객」에게서 「북진일도류」라는 가전 검술을 전수받았다. 센바 학원 재학 당시 출신과 외모 덕에 학원의 유명 인물이었다. 아버지가 체포·수감된 후 인간관계에 변화가 생기며 성격도 변했다. 제3차 붕괴 발발 시 제3율자가 된다. 능력은 번개를 조종하는 것. 체내의 붕괴 에너지를 키아나가 흡수하며 인간 형태로 돌아왔다. 정보에 따르면 네겐트로피가 장공시에서 준비하던 일은 대부분 그녀와 연관이 있다. 그녀가 제3율자가 된 데에는 숨겨진 사정이 있는 것으로 보인다. 장공시를 떠난 후 키아나와 함께 세인트 프레야 학원에 들어가 전투소녀(발키리)가 되어 제5소대에 소속되었다. 추상편 마지막에 율자화했으나 키아나가 세계를 파괴하는 것을 막지 못했다.
신생편: 추상편과 출신 동일. 키아나, 큐슈와 함께 장공시를 탈출하던 중 포로로 잡혀 네겐트로피의 집행자·박사의 실험 연구 대상이 되었다. 현재 천명의 전투소녀들에게 구출되어 함께 세인트 프레야 학원으로 이송되었다.