In the near future, crime runs rampant in the streets and two major mafia groups are battling for power. In order to eliminate the two mafia groups, the Tokyo Metropolitan Police Department orders an undercover investigation of their headquarters. However, the ones chosen for the mission are four people known as "losers". Will they be able to successfully solve the case?

The AKB48 Request Hour Setlist Best 100 2009 (AKB48 リクエストアワー セットリストベスト100 2009) was held from January 18 to January 21, 2009 at Shibuya AX. Fans made their voices heard by voting for their favorite AKB48/SKE48 original songs.

AKB48 Request Hour Setlist Best 100 2011 is AKB48's 4th Request Hour. A voting ticket was included in Beginner's limited edition. All songs out at the time of voting were available to vote, with the exception of the medleys in A3 and K3, Sakura no Hanabiratachi 2008, the Baby! Baby! Baby! remixes, AKB's cover of Idoling!!!'s Moteki no Uta, Ganbare!, 3seconds, Love Wars, and Stargazer.

The AKB48 Request Hour Setlist Best 100 2008 (AKB48 リクエストアワー セットリストベスト100 2008) was held from January 21 to January 24, 2008 at Shibuya AX. Fans made their voices heard by voting for their favorite AKB48 original songs.