TV-Series
Description
Quon Kisaragi is a central figure in the anime RahXephon, introduced as a mysterious young girl whose quiet presence shapes the story from its opening moments. She is a Mulian, and she is described as the first of her people to be discovered by the human world. She lives under the care of Itsuki Kisaragi, a researcher at the TERRA organization, and is formally treated as his younger sister, though her true origins are far more unusual.

Her birth name is Quon al Padis. As a child, she was found with another girl, Maya, near the Shrine of Time on Nirai Island. Maya emerged from the experience unharmed, but Quon fell into a coma and was taken to the Bähbem Foundation, where her life was suspended in a cryogenic state. During this time she became the subject of extensive experimentation, recorded in the Foundation's files as Human Specimen No. 1. A sample of her DNA was later used to create two children, Ayato Kamina and Itsuki Kisaragi, who were raised respectively by Maya and by Itsuki's family. This makes Quon the genetic origin of both the series' protagonist and its chief researcher, a revelation that connects her to the story's central mystery of the instrumentalists known as Ollin. Because she remained frozen while the outside world aged, she kept a youthful appearance while her twin sister Maya grew older, leaving an unusual gap between the two sisters. After years in the Foundation's care, she was entrusted to Itsuki, adopted the name Kisaragi, and came to live a fragile existence sustained by a mechanical vest-like device called the Life Module.

Her personality is defined by a soft-spoken, enigmatic manner. She rarely speaks, and when she does, her words tend to be cryptic, philosophical, and full of musical imagery. Her habitual expression of surprise or agreement is the sound Ra-ra or La-la, which has become her recognizable verbal tic. She is also a skilled musician, able to play both the violin and the piano, and she is frequently shown singing. Music is central to how she understands the world, and she shows a curious interest in the music other people listen to, often removing their headphones so she can hear it for herself. Her demeanor can seem detached, but it reflects a deep, intuitive perception of events and people rather than indifference.

Quon's role in the story is closely tied to Ayato Kamina, whom she calls Ollin, a word meaning motion in the Nahuatl language and used in the series to refer to the pilots destined to operate the Xephon machines. She meets Ayato early in the series and immediately treats him with a warmth and ease that no other character shares. Their connection is not romantic; instead, it is a rare and natural intimacy. She is one of the few people who never treats Ayato as a curiosity or a nuisance, and she seems to understand his situation and his destiny better than he does himself. She also shares with Ayato the physical markers of a potential instrumentalist, and both of them are shown undergoing examinations because of it. Her sensitivity extends beyond ordinary empathy: whenever Ayato enters battle, she can feel him, and on at least one occasion she experienced physical cold or warmth in response to his struggles and victories.

Like Ayato, Quon is herself an Ollin and is destined to pilot a Xephon of her own, the black RahXephon, sometimes referred to as Belzephon. She only gradually accepts this calling. During a strange encounter inside the Shrine of Time, what should have been a short passage of time stretches into days, and there she meets the entity Ixtli, who urges her not to be afraid and to open her own egg of Xephon. Later, she attempts to awaken her black RahXephon but is interrupted before she can complete the process. The frail state of her body, which makes even sudden agitation dangerous, adds to the difficulty of her path. Despite being expected to stand with the Mulian side in the final confrontation, she ultimately chooses Ayato's happiness over that allegiance, allowing him to prevail and merging with her own Xephon so the two of them can together tune the world.

Her development across the series moves from mystery toward self-knowledge. She begins as a fragile, almost otherworldly presence whose words seem like riddles, and she grows into a decisive figure who claims her identity as an instrumentalist and makes her own choice about the world's future. Her relationships define much of that growth. With Itsuki, she shares a quiet familial bond as his adopted sister. With Maya, her twin who aged normally, she shares a strange and distant sisterhood shaped by their different experiences of time. With Ayato, she shares the deepest connection, one that is at once that of a guide, a companion, and, in genetic terms, a mother.

Her notable abilities include her musical talents, her piloting of the black RahXephon, and her empathic bond with Ayato. Her cryptic speech and unusual verbal habits are also markers of her nature as a being who perceives the underlying rhythm of the world. In the end, she is a key participant in the re-tuning of the world, and her influence continues even after that event, reflected in the naming of a child in the newly shaped reality. Within TERRA, her gentle strangeness earned her something of an informal following among the personnel.