Saitama is a superhero who has trained so hard that his hair has fallen out, and who can overcome any enemy with one punch. However, because he is so strong, he has become bored and frustrated that he wins all of his battles too easily.
Elenco: Makoto Furukawa , Kaito Ishikawa , Kazuhiro Yamaji , Yuichi Nakamura , Kenjirou Tsuda , Aoi Yuki , Minami Takayama , Hiroki Yasumoto , Takahiro Sakurai , Youji Ueda , Daisuke Namikawa , Satoshi Hino , Yuji Ueda , Kohsuke Toriumi , Katsuyuki Konishi , Hatano Wataru , Masaya Onosaka , Mamoru Miyano , Saori Hayami , Yuuki Kaji , Tesshou Genda , Hikaru Midorikawa .