A contemporary of the Sankt Kaiser, who has been in stasis since that era. She is discovered and rescued by Subaru during the Sound Stage X  radio drama, and befriends Vivio. She has been asleep since then and later appears in ViVid.    Source: Wikipedia

The series takes place four years after the events of Mahou Shoujo Lyrical Nanoha StrikerS, during which Nanoha Takamachi rescued and adopted a young girl named Vivio, who is the reincarnation of the Sankt Kaiser, Olivie Segbrecht. After entering her fourth year of elementary school, Vivio is given her own intelligence device, Sacred Heart, and gains the power to transform using her adult Sankt Kaiser mode. She soon comes across a girl named Einhart Stratos who, similar to Vivio, is the descendant of another Sankt Kaiser ruler, Claus G.S. Ingvalt. As Einhart becomes determined to prove her fighting style is the strongest, Vivio befriends her and, together with her friends, enters a martial arts tournament where they fight against various opponents and learn more about their past lives.
 
Included one-shot: 
Volume 2: 5th Anniversary Collaboration Comic: Fate/stay night x Mahou Shoujo Lyrical Nanoha

The manga takes place four years after the JS incident in Magical Girl Lyrical Nanoha StrikerS, and stars Vivio Takamichi, a fourth-year elementary student at St. Hilde Academy of Magic. Vivio has learned to conjure her adult form and has received her own Device — named Sacred Heart — from Nanoha, and has promised Nanoha to never use either for mischief. Then a mysterious magical fighter appears and targets Vivio.
 
(Source: Anime News Network)

Raised up in the same orphanage, Fuuka and Rinne were once close friends but parted ways after a quarrel ended up with Rinne overwhelming Fuuka with her martial art skills. Fuuka lived a life of poverty after leaving the orphanage but an accidental encounter with renowned martial arts champion Einhard Stratos leads to the discovery of Fuuka's hidden talent in fighting. Einhard offers Fuuka a job and through her coaching and encouragement, she is set to meet Rinne again, in the ring. 

__Non-anime roles:__
- Shenhe - Genshin Impact (VG)
- Sugar - Goddess of Victory: Nikke (VG)
- Dikke - Reverse: 1999 (VG)
- Bianca - Punishing: Gray Raven (VG)

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