Quick answer — "THE HERO!! ~Ikareru Kobushi ni Hi wo Tsukero~" by JAM Project is the opening theme of One Punch Man.
"THE HERO!! ~Ikareru Kobushi ni Hi wo Tsukero~" by JAM Project is the opening theme of One Punch Man.
"THE HERO!! ~Ikareru Kobushi ni Hi wo Tsukero~" is performed by JAM Project.
