Manga author Ken Akamatsu
has announced that his manga series UQ Holder!
will receive two additional original anime episodes after the anime adaptation
airs. Each episode will be bundled with the manga's 16th and 17th limited edition volumes to be released on March 9, 2018 and June 8, 2018, respectively.
The manga initially began its serialization in Kodansha's Weekly Shounen Magazine
in August 2013, before transferring to Bessatsu Shounen Magazine
in October 2016. It is inspiring an anime adaptation by J.C.Staff
titled UQ Holder!: Mahou Sensei Negima! 2
, which will begin airing on October 3. The series has already released a prologue OVA
that was bundled with its 14th volume on September 8.
Source: Ken Akamatsu's Twitter