January 24, 2011 09:00 AM | by 
The sister group of AKB48, SDN48 announced when they made a special appearance during “AKB48 Request Hour Set List Best 100 2011“ said that they will be releasing their 2nd single on March 23.
They first released their 1st major single titled “GAGAGA” in November 2010, which was also released in Korea. They still did not give details for their 2nd single including its title.