Manga
Further information: List of RahXephon media#Manga volumes See also: #Book reviewsThe 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".
The scenario of the manga adaptation is similar to RahXephon series with some minor and major differences. 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, while this role is taken by Reika in the manga. The rate of time dilation is also different in the manga version, as the year outside Tokyo is 2033 instead of 2027.
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