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.

At the end of the 20th century, the Earth Defense Force continued to protect the earth from aliens and monsters that invaded one after another. Returning to the origin of his successful work "Earth Defense Girl Iko-chan". With AKB48's Haruka Katayama and SDN48's Kayo Noro as cast members, nine unique beautiful girl members fight against the invaders to defend the earth.

Centers around a disturbing murder case that occurs during a company trip. In the wake of the incident in which the company’s general manager is killed by someone, unexpected internal problems are revealed that had previously been thoroughly concealed to this point. Matoba Ikuko is a plain, gloomy and unfriendly general worker, but her work is fast and accurate. She becomes interested in the case and decides to lead her own investigation. Mikami Tazuko is a hardworking sales manager who witnesses her manager’s affair while on the trip and begins to develop her own theories through her private social media diary.

Boku no Taiyou is AKB48's Himawarigumi 1st Stage (Himawarigumi 1).