is a Japanese anime television series created and directed by Yutaka Izubuchi. The series follows 17-year-old Ayato Kamina, his ability to control a mecha known as the RahXephon, and his inner journey to find a place in the world. His life as a student and artist in Tokyo is interrupted by a mysterious stalker, and an invasion between strange planes invading the city and its similarly strange defenses.

The series was animated by Bones and it aired on Fuji TV for twenty-six episodes from January to September 2002. It was produced by Fuji TV, Bones, Media Factory and Victor Entertainment. The series received critical acclaim and was subsequently translated, released on the DVD and aired in several other countries, including the United States. A 2003 movie adaptation RahXephon: Pluralitas Concentio was directed by Yutaka Izubuchi and Tomoki Kyoda, with plot changes and new scenes. The series was also spun into novels, an extra OVA episode, an audio drama, a video game, illustration books and an altered manga adaptation by Takeaki Momose.

Director Izubuchi said RahXephon was his attempt to set a new standard for mecha anime, as well as to bring back aspects of 1970s mecha shows like Reideen The Brave.

Setting The backstory of RahXephon is a fight against multi-dimensional invaders known as Mulians (known as ). The Mu are visually indistinguishable from humans, however they carry a genetic marker called the "Mu phase" which turns their blood blue and causes some memory loss when they mature.

The story reveals that two Mu floating cities appeared above Tokyo and Sendai around the end of 2012. The ensuing conflict between Mu and humans escalated into nuclear warfare, and the Mu enveloped Tokyo and the outlying suburbs within a spherical barrier resembling Jupiter, referred by outsiders as "Tokyo Jupiter" ("Tōkyō Jupita"). The barrier has a time dilating effect, which causes time inside Tokyo Jupiter to slow down to one-fifth compared to the outside time, and allowed the Mu to secretly take control of Tokyo, using the area as their base of operations. The goal of the human forces outside of Tokyo Jupiter is to build up their strength to penetrate through and invade Tokyo Jupiter and stop the Mu while surviving their attacks.

Although RahXephon is part of the mecha genre of anime, its "mechas" are not mechanical. The mechas, used by the Mu and called Dolems, are made out of clay, like golems or various other beings from mythology/folklore. Each is bound to a certain Mulian; however, some are also bound to certain human hosts, called "sub-Mulians".

The dominant theme of RahXephon is the music changing the world. The Dolems are animated by a mystical force connected to music; most of the controlling Mulians appear to be singing. A Dolem attacks while singing, and sometimes the attack is the song itself. The RahXephon can also attack by having its pilot—the "instrumentalist"—sing a note. This unleashes force waves that cause massive destruction. Each Mulian Dolem has an Italian name referring to musical notations, such as, Allegretto, Falsetto, or Vivace. The ultimate goal of the RahXephon is to "tune the world." Izubuchi says the name RahXephon lacked a real meaning, but that he now explains it as composed of Rah as the origin of Ra according to Churchward, X as the unknown variable or X factor, and -ephon as a suffix for instrument from "-phone".

Plot The most important plot line of the series is the unusual relationship between Ayato Kamina and Haruka Shitow. Although Haruka appears to be a stranger to Ayato at first, the series reveals that they knew each other from before the beginning of the story.

Ayato is a boy who was unknowingly conceived with the help of the Bähbem Foundation living in Tokyo with his adoptive mother, Maya Kamina. Ayato had met Haruka on a trip outside of Tokyo, and they continued to see each other when they returned to school in Tokyo. At this time, Haruka's family name was Mishima.

However, during what later became known as the Tokyo Jupiter incident, Haruka and her pregnant mother were away on a holiday trip while Ayato was caught inside the city. Years later, after giving birth to Haruka's sister Megumi, Haruka's mother remarried and their family name became Shitow. Meanwhile, Maya modified Ayato's memories to make him forget Haruka. The series makes clear that all of the humans within Tokyo Jupiter are subject to the same kind of mental control, thinking that they are all that's left of mankind after a devastating war. Ayato is haunted by visions of Haruka, which he manifests in his art. Ixtli, RahXephon's soul, also adopts Haruka's appearance and family name (Mishima) to guide Ayato, but takes a different given name—Reika.

The story begins as Tokyo comes under attack by invading aircraft while a mysterious woman, later revealed to be Haruka, stalks Ayato. By this point, Haruka has grown considerably older than Ayato and everyone else who is inside of Tokyo Jupiter because of the time dilation. Because of this and her now having a different last name, Ayato does not recognize Haruka and also initially does not fully trust her, but he gradually re-discovers his love for her as the series progresses, and he learns of everything that has happened. At the end of the series, Ayato's RahXephon merges with Quon's, allowing him to modify the past by "re-tuning the world" to make it so that he and Haruka are never separated. In the final sequence of the series, the adult Ayato is seen with his wife Haruka and their infant daughter Quon.

Characters

This section represents the story from the television series and may differ from other works.

At the beginning of RahXephon, Ayato Kamina is a modest 17-year-old living in Tokyo. He is an average student, who enjoys painting and spending time with his classmates Hiroko Asahina and Mamoru Torigai. He has affectionate relationship with his mother, strained by her long-hour work.

During the sudden attack on Tokyo, Ayato hears the singing of his classmate Reika Mishima. She leads him to a giant egg containing the RahXephon. Haruka Shitow, an agent of the defense research agency TERRA (acronym for Tereno Empireo Rapidmova Reakcii Armeo, broken Esperanto for Earth Empire Rapid Response Army), brings Ayato and the RahXephon to their headquarters.

Ayato moves in with Haruka's uncle Professor Rikudoh and pilots the RahXephon against the attacking Dolems. Quon Kisaragi, a mysterious girl living with chief researcher Itsuki, seems to share some of Ayato's artistic talent. Ernst von Bähbem of the Bähbem Foundation sponsors TERRA through the Federation, the successor of the United Nations.

While most characters are introduced by the end of episode 7, RahXephon continues to characters development and reveals their mysteries and relationships through heavy use of foreshadowing.

Production and media RahXephon was initially produced as a TV series. A manga version, novels, soundtracks and an audio drama were published during the original broadcast. A movie, an OVA episode, art books, and guide books were also created. Characters, mecha and story from RahXephon were featured in three video games.

TV series

Yutaka Izubuchi was a successful anime supervisor and designer focusing on costume, character and mechanical design, notably in the Gundam and Patlabor series. His friend and former Sunrise colleague Masahiko Minami, producer and president of Bones, had suggested Izubuchi to direct something.

Izubuchi finally agreed and RahXephon became his first directing job. Izubuchi returned to the classic mecha shows of the 1970s and 1980s and wanted to make a show of that type updated with advances in anime production as well as adding his own personal ideas. He wanted to "set a new standard in the field" of mecha anime to show his "own standard" and capabilities as a creator-showrunner. Media Factory, Fuji TV. and Victor Entertainment joined Bones as production partners. After planning the story and designing characters and locations, a core group was expanded to a full production staff that completed the show, primarily working together — a departure from the trend of outsourcing anime production.Making of RahXephon special feature. DVD Orchestration 7

The original music, except for the opening theme, is composed by Ichiko Hashimoto; she was initially approached to compose some of the score and replied that she wanted to compose all of it. She also plays Maya and performs the closing theme together with her sister Mayumi. The opening theme "Hemisphere" is composed by Yoko Kanno and sung by Maaya Sakamoto, who plays Reika. Hashimoto's compositions range from piano sonatas and acoustic chamber music to experimental jazz, hard rock, and ambience that crosses the border into sound design. She also includes more mainstream jazz and orchestral music played with both acoustic and electronic instruments.

Movie A television movie version of RahXephon called Pluralitas Concentio was directed by Yutaka Izubuchi and Tomoki Kyoda. Kyoda had directed three episodes of the TV series and acted as assistant director with Soichi Masui. Izubuchi acted as Chief Director on this movie, but was not heavily involved in its production. Most of the staff members involved with the TV series worked on the movie, and it was distributed by Shochiku. The producers were Masahiko Minami, Shiro Sasaki, Maki Horiuchi, Kenji Shimizu, and Tatsuji Yamazaki.

The movie quickly reveals mysteries that were developed slowly in the TV series and makes changes to the plot. It begins with a prologue showing previously unseen events, followed by a couple of expository scenes. The final 30 minutes contain the most plot changes and new scenes, ending with a new epilogue. The rest of the movie consists mainly of abridged scenes from the original series, sometimes with characters replaced or with different motivations and dialogue. The link between the Kamina and Mishima families and other storylines that were prominent in the original TV series were reduced or removed. One prominent distributor promoted the movie as an "encore"—an extra performance at the end of the series, rather than as a replacement.A.D. Vision (2003) RahXephon:Pluralitas Concentio DVD cover: "Encore. Return to the world of RahXephon..."

Manga

The manga was illustrated and written by Takeaki Momose. Momose was one of the candidates for character designer on the series, but Izubuchi wanted Akihiro Yamada to do the original designs, and Hiroki Kanno got the job of adapting them for animation. With the manga Momose got the opportunity to re-design the characters into his own style and make changes in characterization and story, as well as adding "fan service". It was serialized in Shogakukan's seinen manga magazine Monthly Sunday Gene-X from August 18, 2001, to November 19, 2002.

Oto the anime In the anime series, Reika is a mysterious and distant figure; in the manga Reika is a more comical figure who grew up as Ayato's adoptive sister with a darker origin. The anime series shows Megumi competing with Haruka for Ayato's affections, a role taken by Reika in the manga. In the manga the rate of time dilation is different. Te year outside Tokyo is 2033 rather than 2027.

Reception The anime series originally aired on stations in the Fuji Television network and its affiliates, except in the Kansai region where independent UHF stations aired it instead. Starting with episode 10, some stations moved the series from the afternoon to after midnight, but other stations moved it from late night to afternoon.Tōkai Television Broadcasting stations: Late night: Afternoon: RahXephon thus remained both a "late night anime" and afternoon anime throughout its original run.