When UQ Holder's anime began airing in October 2017, soon after, it was announced there would be a sweepstakes through Twitter to win one of four prizes. By simply following the official UQ Holder! Twitter account and retweeting this post. users would be eligible to claim a prize.
The sweepstakes lasted October 17th - 23rd. The prizes were as followed:
Cast Postaligned Autographed Poster (2 winners)
UQ Holder! Volume 15 signed by Ken Akamatsu (5 winners)
Volumes 1-14 (including limited editions) of UQ Holder! (1 winner)
Volumes 1-19 of the new releases of Negima! (1 winner)
There were 9 winners in all and did not extend outside Japan.