The One Punch Autumn Festival event this September 25th, 2016 (which I will be attending because I also won a ticket) has its visuals up, with inspiration from the Drama CDs of Genos and Saitama at a festival (translations found here and here).

The theme of the event will be ‘Autumn Festival,’ with the voice actors for Saitama, Genos, and a ton of characters from the show attending as well! The synopsis is ‘With the continuation of the Festival from the One Punch Man Drama CDs, we now carry this theme into reality, but what lies in store…?’