Its 2010 reissue, Breaking Heart, reached number two in South Korea and spawned the number-one single "You Drive Me Crazy", which sold over three million digital downloads.

The group's 2011 EP John Travolta Wannabe peaked at number three on the Gaon Album Chart.

[1] The group earned a string of South Korean number-one singles in 2011 and 2012 with "Cry Cry", "We Were In Love", and "Lovey-Dovey", the last of which was the second best-selling digital single of 2012 in South Korea with over 3.7 million units sold.

[2] In August 2013, the group released their second Japanese-language studio album Treasure Box, which peaked at number four on the Oricon chart and spawned two Oricon top five singles: "Sexy Love" and "Bunny Style!".

The group has released four further EPs, And & End (2014), So Good (2015), Remember (2016), and What's My Name (2017), all of which managed to reach the top five in South Korea.