赤松健
"UQ Holder!" is written and illustrated by Ken Akamatsu. It was first serialized in Kodansha's "Weekly Shōnen Magazine" from August 28, 2013 to June 22, 2016. It was then transferred to "Bessatsu Shōnen Magazine", starting on October 8, 2016, and was renamed "UQ Holder!: Magister Negi Magi! 2". In May 2021, it was announced that the series will end in nine chapters. Kodansha has collected its chapters into individual "tankōbon" volumes. The first volume was released on December 17, 2013. As of March 9, 2021, twenty-five volumes have been released.