Haganai
The first "Boku wa Tomodachi ga Sukunai" manga series, written and illustrated by Itachi, has been published in Media Factory's "Monthly Comic Alive" magazine since its May 2010 issue, released on March 27, 2010. Additionally, the series has been collected in 14 "tankōbon" volumes. Seven Seas Entertainment has licensed the first manga series in North America under the title "Haganai: I Don't Have Many Friends".
Shaman King
In December 2017, Kodansha's magazine "Shonen Magazine Edge", in which Takei is publishing his ongoing manga "Nekogahara", announced the company acquired the ""Shaman King"" trademark from Shueisha in Japan and Viz Media in North America. A website was created and opened on January 1, 2018, and it announced Kodansha is celebrating the series' 20th anniversary. For this purpose, Kodansha will republish the manga as ebooks with new cover artwork, and a new arc will be published in "Shonen Magazine Edge". This new arc, "Shaman King The Super Star", was preceded by three prologue chapters on April 17, 2017, and started to be published on May 17, 2018. A spin-off manga titled "Shaman King Gaiden: Red Crimson", drawn by Jet Kusamura, was launched in "Shonen Magazine Edge" in June 2018. The first "tankobon" volume of both "Super Star" and "Red Crimson" was released on November 15, 2018. A few time before Takei put "Super Start" on a three-month hiatus in December.