Saitama is the most powerful hero of all. Due to his superhuman condition, Saitama faces an existential crisis, as he is now too strong, being able to defeat his opponents with a single blow, so he finds his battles boring and emotionless. He registered with the Hero Association, where he is given the name Caped Bald. Having started at the bottom of Class-C, he is currently in Class-A, occupying rank 39. He is tasked with defending City-Z against the kaijin.