Fans, rejoice! At the "One Punch Man Fall Festival" on Sunday the staff and cast of the first season announced that One Punch Man is, to no one's surprise, getting a second season.
At this time no additional details are known.
Fans will have to be happy with the six additional episodes of One Punch Man that are included with the Japanese BDs/DVDs, and the OVA yet to be released with the manga’s tenth volume in December.
Source: Anime News Network