Summary
Chizome Akaguro was profoundly inspired by All Might’s debut as a Hero, which led him to aim for the same profession. He enrolled in a private high school with a Hero course to receive his training, but he became disillusioned after witnessing what he perceived as the fundamental decay of the institution. Seeing that students were pursuing heroism solely for money and personal gain, he dropped out during the summer of his freshman year. Following his departure from school, the teenage Chizome attempted to preach an ideology he termed the "Revival of Heroics" through street oratory and soapbox speeches, but he received no audience. Over the subsequent decade, he concluded that only direct action could create his ideal world and reform the Hero system. He dedicated himself to self-study and rigorous training in the killing arts to fulfill his duty. During this ten-year period, his parents died, though the cause is unknown and Chizome is not believed to have been involved. After completing his training, Chizome adopted the mantle of Hero Killer Stain to advocate for the "Revival of Heroics." He established strict guidelines for true Heroism, asserting that Heroes must not desire rewards or compensation and that one earns the title only through ultimate acts of self-sacrifice. According to his ideology, modern "Heroes" are fakes who merely pretend to hold the title. Stain implemented his vision by killing Pro Heroes, vowing to continue his purge until the world recognized the flaws in the Heroics system. His ultimate goal was to establish a just world populated by genuine Heroes.
