[3] Following a short hiatus, the group released their first charity single Happy Pledis 1st Album in December 2010.

Shortly after, the group released their first studio album in Korea titled Virgin.

Following promotions for their first Korean studio album, the group released their fourth single album "Red" / "Blue", which saw the group split into two subunits "After School Red" and "After School Blue".

A week later, following leader Kahi's departure, the group returned to South Korea for the release of their fifth single album "Flashback".

The group's first greatest hits album was released in March 2013, along with a DVD of their first Japanese tour.

After School's final Korean single before the departure of most of its members, "First Love", was released in June 2013.