UQ Holder! volume 11 features story and art by Ken Akamatsu.

After being given permission from Yukihime to leave Senkyōkan, Tōta heads off to participate in the Mahora Martial Arts Tournament. But before the tournament even begins, Tōta receives word that his grandfather has been seen, and vows to rescue him. However, Tōta soon realizes that the situation is even graver than he anticipated, and when Fate offers him a proposition, he is left with a choice. Should he side with Fate to save his grandfather, or with Yukihime, who wants to kill him? Or, is there a third option…?

UQ Holder! volume 12 features story and art by Ken Akamatsu.

With Tokyo making way for the upcoming Mahora Martial Arts Tournament and Neo Olympics, Tota and company couldn't be more fired up. But before the games can begin, Mizore, Shinobu, and Kirie face off in the God Bull Speeder Bike Race - with Tota's love as the prize! And when Kirie and Tota accidentally freeze time at the finish line, they find themselves face-to-face with Cutlass...and a few more not-so-friendly faces, including Tota's grandfather! Does Tota have what it takes to save Negi, and to go up against the "greatest mage"the Earth has ever known?

UQ Holder! manga volume 13 features story and art by Ken Akamatsu.

After being thrust into the past, and right into the middle of the days of his grandfather’s youth, Tōta comes face to face with the Mage of the Beginning! However, things are not all they appear to be—Tōta isn’t just in Negi’s memories, but a nightmare where Ialda reigns supreme. With the help of Yukihime, as well as Negi’s first partner Asuna Kagurazaka and the rest of UQ Holder, Tōta must save his grandfather and stop Ialda once and for all, or be pulled into darkness, along with the rest of the world.

UQ Holder! manga volume 14 features story and art by Ken Akamatsu.

After their showdown, Negi asks Tōta to follow in his footsteps. The request brings Tōta and Kirië to Kyoto in search of an old workshop owned by Nagi Springfield, Negi’s father and Tōta’s great-grandfather. But uncovering the workshop isn’t such an easy task, and with Kirië struggling over her conflicted feelings for Tōta, the trip might be more than the two of them can handle.

UQ Holder! manga volume 15 features story and art by Ken Akamatsu.

After travelling all the way to Kyoto, Tōta and Kirië finally track down Nagi’s old workshop, where they meet Albert Chamomile, Negi Springfield’s old partner. There, Albert shows Tōta memories from Negi’s past, including an alternate timeline of how Negi’s life would have been if Tōta didn’t exist. Tōta watches from the sidelines as a decisive battle unfolds between Negi and Nagi, and finally sees firsthand the overwhelming power of the two mages that came before him.