Onepunch-Man Gaiden - Tatsumaki no Koto (Doujinshi)

In a world where monster attacks and calamities occur on a daily basis, society counts on the few heroes they have to protect them. One hero, however, stands above the rest. A man with the ability to eliminate any threat with ONE PUNCH! Follow Saitiama, the most average man in the world, as he desperately searches the corners of the Earth for the thrill of being a hero...