Manga artist Keiko Okamoto, known for drawing the Corrector Yui manga adaptation, died on May 6 from a cerebral hemorrhage at an undisclosed age.
Manga artist Keiko Okamoto, best known for illustrating the Corrector Yui manga adaptation, died on May 6 from a cerebral hemorrhage. Her passing was announced on June 18 through her official X (formerly Twitter) account and the account for Comic Maomao, the magazine where she had been serializing her most recent work.
Okamoto's most prominent contribution to the manga world was her adaptation of Corrector Yui, a franchise originally created by Kia Asamiya. The anime series premiered on NHK Educational TV in April 1999 and ran until October 2000, produced by Nippon Animation. Set in a future where all computers rely on a single global network called COMNET, the story follows an ordinary schoolgirl named Yui who is recruited by a corrector program to save the digital infrastructure from corruption.
Two separate manga adaptations accompanied the anime. Asamiya himself drew a two-volume version serialized in Ciao, while Okamoto produced a more extensive nine-volume adaptation published by NHK Publishing. Her version ran from April to December 1999, followed by a four-volume sequel titled Corrector Yui Ver.2, which was published from April to October 2000. Tokyopop later licensed and translated Okamoto's version into English for the North American market beginning in 2002, making her work accessible to a wider international audience.
At the time of her death, Okamoto had been actively creating new manga. She began serializing Ochikobore Hoketsu Reijō wa Tsumetai Kōshaku kara Nigedashitai roughly translated as The Dropout Substitute Daughter Wants to Run Away From the Cold Duke in Comic Maomao starting in March 2026. The series had only been running for approximately two months before her passing, leaving its future uncertain.
The announcement of her death came from her relatives, who posted through her official account on X. Comic Maomao's official account also confirmed the news on the same day. No public funeral or memorial details have been disclosed.
While Corrector Yui may not carry the same mainstream recognition as some of its late-1990s contemporaries, the franchise holds a distinct place in the magical girl and sci-fi crossover space. It was one of NHK's notable original anime productions during a period when the network was investing in children's programming. The show blended traditional magical girl tropes with early internet-age themes about digital networks and artificial intelligence, concepts that have only grown more relevant over time.
Okamoto's manga adaptation was widely regarded as the more detailed and accessible version of the two print renditions, running significantly longer than Asamiya's original manga and fleshing out storylines that the anime explored. For many English-speaking fans, her Tokyopop-published volumes served as their primary entry point into the franchise.
Keiko Okamoto's death marks the loss of a manga creator whose work bridged anime and print media during a formative era for the industry. Her Corrector Yui adaptation brought a beloved NHK anime to bookshelves across Japan and eventually overseas, while her continued activity in serialization demonstrated an enduring commitment to the craft. The manga community has lost an artist who contributed meaningfully to the medium across multiple decades of work.
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