Summary
Hiro appeared in a single episode as a downtrodden student at Shibusen who was perpetually bullied and exploited by his peers. His fortunes changed when he discovered Excalibur and sought to become his partner. During their time together, Hiro demonstrated remarkable power by simultaneously defeating Black Star, Death the Kid, and Kilik, achieving victory merely by uttering the names of attacks, which subsequently triggered explosions. He also managed to complete all 1,000 tasks assigned by Excalibur, though he found the entity's constant sneezing unbearable. Eventually, Hiro discarded Excalibur and turned his attention to weightlifting.
