A manga prelude to the Brain Powerd television series, featuring the original story penned by Tomino and illustrations by Yukiru Sugisaki, was serialized monthly in the Japanese Kadokawa Shoten magazine Shōnen Ace beginning in the January 1998 issue.
A manga adaptation illustrated by Kira Inugami was serialized in Kadokawa Shoten's magazine Comp Ace between January 26, 2007 and February 26, 2008.
Before the game's release, a manga adaptation drawn by Ui Takano was serialized in Kadokawa Shoten's Comptiq magazine between the February 2007 and October 2008 issues.
Finally she got her break when her first original series, Harlem Beat wa Yoake Made was serialized in Kadokawa's Monthly Asuka.
Welcome to the N.H.K. began as a single novel by Takimoto with a cover illustratation by Yoshitoshi ABe, which was published by Kadokawa Shoten in Japan on January 28, 2002.
Sai Yukino has written a series of short side stories for The Story of Saiunkoku which are published in collected volumes by Kadokawa Shoten.