JAM Project (Garo: Honoo no Kokuin) will be performing the anime's opening theme, and Hiroko Moriguchi (Mobile Suit Zeta Gundam) will be performing the anime's ending theme. Each theme will be a CD single, releasing on October 21 and November 18, respectively.
A second preview video has also been released.
One Punch Man is a series that follows the adventures of Saitama, an average-looking fellow with a bald head and lifeless expressions, who is actually a superhero and bored of battling weak opponents. He has trained himself to the point where his hair has fallen out. As result of his training, he has become so powerful that he can defeat enemies with a single punch.
The series is scheduled to premiere on TV Tokyo in Fall 2015.