After School is a South Korean girl group formed by Pledis Entertainment in 2009.
Debuting initially in January 2009 as a 5-member group with "AH", they were labeled the Korean Pussycat Dolls for their mature and sexy concept. Later in April 2009, After School released their first digital single "Diva" and introduced their newest member, U-ie, following their admission/graduation concept. Then, in November 2009, original member Yoo Soyoung departed from the group citing health and study reasons. At the end of the same month, After School admitted two new members, Raina and Nana, into the group for their 2nd single "Because of You". Then shortly in March 2010, After School returned for their 3rd single "Bang!", admitting new member Lizzy. In the summer of 2010, After School created its first subgroup, Orange Caramel, a cute 3 member group consisting of After School's youngest members: Raina, Nana, and Lizzy. Orange Caramel released their first mini album with the title track "Magic Girl". Later in Fall 2010, Orange Caramel made a comeback with their second mini album with their title track "Aing♡". Then, After School made a comeback as a whole (without Bekah) for the winter, promoting their single "Love Love Love" for their "Happy Pledis" project. After School then announced their Japanese expansion and paired with Namie Amuro for the hit song, "Make it Happen" in February 2010 which generated much interest from the Japanese communities. Orange Caramel then returned to the scene on April 2011, initiating their "One Asia Project" with their single, "Bangkok City", where they inherited a chic, fierce concept, yet retaining their individual sound. Then, After School made its long-awaited comeback on April 2011 with their first album "Virgin" with their title track "Shampoo", and admitted their newest member, E-Young. After their promotions, Bekah announced her departure from After School and became After School's first graduate, graduating in July 2011 through the group's fan meeting. In mid-July 2011, After School then created two additional subgroups, After School Red and After School Blue, which both released singles at the same time. After School Red consisted of the members Kahi, Jung-A, U-ie, and Nana, taking on After School's original sexy and fierce concept with their title track, "Into the Night Sky". After School Blue consisted of the members Juyeon, Raina, Lizzy, and E-YOUNG, taking on an innocent, cute concept with their title track, "Wonder Boy". After their subgroup promotions, After School began its Japan promotions with their first Japanese single, "Bang!". On October 2011, Orange Caramel made a comeback, continuing their "One Asia Project" with their new single, "Shanghai Romance". Later that month, After School released their newest Japanese single "Diva" and began sales in mid-November. In December, the second "Happy Pledis" mini album was created with the title track, "Love Letter". They announce their 3rd Japanese single, "Rambling Girls", which they will release in January 2012 with the Japanese version of "Because of You".