Super Junior (슈퍼주니어), also known as SJ or SuJu, is a South Korean group under SM Entertainment formed in 2005 by Leeteuk, Heechul, Yesung, Shindong, Sungmin, Eunhyuk, Siwon, Donghae, Ryeowook and Kyuhyun. Originally with 13 members, Hangeng, Kibum and Kangin left the group eventually. Initially debuting with 12 members on November 6, 2005 with TWINS (Knock Out), they were simply a project group named Super Junior 05. With Kyuhyun's addition on May 23, 2006 for the release of U, the 05 was dropped and SJ became an official group. SORRY, SORRY was their first album to debut at #1 on Hanteo. Released on March 12, 2009, it had over 150,000 copies pre-ordered and it sold over 29,000 copies on the first day, defeating Seo Taiji's record of 25,000. Promotions for the album started March 13 with the performance of SORRY, SORRY and Why I Like You on Music Bank. From March to May, the song collected a total of 10 #1 mutizens with consecutive wins. On May 12, a new version of the album was released with 너라고 (It's You) as single. The music video was released two days before its schedule because it was leaked onto the internet. On December 21, 2009, Hangeng filed for contract termination with SM Entertainment. The following day, his lawyer stated the claimed reasons behind the action: provisions were in SM's favor, unlawful 13-year contract length, unfair sum of money to end the contract, not allowed to request to revise his contract, forced to do things that were not i...