Hiro, an ordinary DWMA student who is always being ordered by his classmates, learns about the legend of Excalibur and decides to retrieve it in order to become a true hero. The students of the DWMA are surprised when they learn that Hiro indeed managed to make Excalibur his weapon. However, even as Black Star with Tsubaki, Kid with the Thompson sisters, and Kilik Rung with the Pots of Fire and Thunder decide to challenge him together, they all are defeated with a single blow. To continue being Excalibur's master, Hiro manages to successfully complete the 1000 requests ordered by him, but decides to discard him and return to his former life, as he could not tolerate his annoying sneeze, of all things.