Congratulations! AKB48 wins the 54th Japan Record Awards yesterday

 

The award-winning song was "Manatsu-no-sounds good!" (真夏のSounds good!), the 23rd single, released on 23 May.

From TV capture

A music video was filmed in Guam. 

A CD single cover

I found the official AKB48 channel on YouTube. Enjoy!