A fully original side story from the hit underdog fantasy!

With Rotsgard entering summer break, Makoto seizes the opportunity to focus on improving his magical output. While training, he comes across a paper on “mana materialization” that sparks a breakthrough—leading him to develop a brand-new power to protect the Demiplane.

Harnessing his overwhelming mana and razor-sharp focus, he gives form to a shifting, fluid force: the Mana Body!

Even the strongest of the Demiplane are left stunned by this fearsome new ability—what exactly is Makoto’s latest trump card!?