Joining the Hero Association offers Saitama a chance to gain recognition—and perhaps enjoy fighting again. Hero work began as a hobby rooted in his childhood dream, but three years of relentless training left him bald and overwhelmingly strong. Now every enemy falls to a single punch, leaving him bored by battles that offer no challenge.
After witnessing Saitama's power, 19-year-old cyborg Genos asks to become his disciple. He also suggests they register with the Hero Association, which certifies heroes and recognizes their contributions to society. Surprised to discover that he remains unknown despite his strength, Saitama readily agrees. Alongside new allies and against new foes, he takes up life as an Association member, hoping to recover the excitement his effortless victories have taken away.
