From left to right, top to bottom: Kang Sung Hoon, Kim Jae Duk, Eun Ji Won, Lee Jae Jin, Ko Ji Yong, Jang Soo Won 

Pre-debut
Eun Ji Won and Kang Sung Hoon were the first to be discovered by Daesung Entertainment's co-president who was on vacation in Hawaii, United States. Oddly, the two were discovered and casted at a nightclub. Kim Jae Duc and Lee Jae Jin were in a dance group called 'Quicksilvers' in their home town of Pusan, South Korea where one of the members sent in a tape to Daesung Entertainment. During an open audition, Jang Su Won was cast and accepted. Finally, Ko Ji Yong was introduced to Daesung Entertainment by Kang Sung Hoon because they were friends since elementary school.

Debut
Sechs Kies, which mean "six crystals" in German, debuted on KMTV Show! Music Tank on April 15, 1997 with "Haak Won Byul Gohk" (학원별곡). Sechs Kies was also a onetime rival of H.O.T from SM Entertainment. Their talent and skills brought them much attention as they performed five tracks from their first album which was released on May 15, 1997. Their first fan meeting took place on July 21, 1997. Many were impressed with Sechs Kies work and they were invited to perform at the SBS Super Concert in Los Angeles, California in September of 1997. Sechs Kies held their first concert on December 21, 1997.

Sechs Kies performed different genres of music and were asked to perform the musical Alibaba and the 40 Thieves with fellow artist, Jin Joo. Eun Ji Won, the leader of Sechs Kies, started showing off more of his personal talent as he took part in the production of their third album. During this time, all six members of Sechs Kies also released their first movie, Seventeen: The Movie which was in theatres on July 17, 1998. Despite everything they found themselves involved in, Sechs Kies never ceased to impress and amaze their fans with their acting.

Many music award shows were held between December 18 and December 31, 1998, Sechs Kies went home with several Daesang awards proving that all their hard work was well worth the sacrifices Sechs Kies has made for their fans. Sechs Kies spent much of January of 1999 holding concerts throughout Korea. Sechs Kies had a comeback in September of 1999, and performed a song appropriately titled, "Comeback" as well as "Yeh Gam" and "Geu Dae Rul Mum Chu". This album had a lot more input from the members of the group, several of them writing and producing tracks for it. For some reason, Sechs Kies did not stay in the limelight for too long promoting this album.

Post-disbandment
After many rumors began surfacing about whether or not Sechs Kies would return to the studio to create their fifth album, and after several incidents of supposed misconduct from their managing label Daesung Entertainment, Sechs Kies finally did return to the spotlight. But this time, it was something none of their fans would have ever expected.

At 2:00 p.m. on May 18, 2000, Sechs Kies held a press conference to announce their inevitable departure from the k-pop scene as the group 'Sechs Kies'. As a few members shed tears, they explained their situation in little detail. It was rumored that Eun Ji Won and Kang Sung Hoon might form a duet under Daesung Entertainment, or at least stay within the entertainment world. Kim Jae Duc will stay with the company as a choreographer. Lee Jae Jin might join Kim Jae Duc as a choreographer, or he might just return to school out of the limelight along with Jang Su Won. Ko Ji Yong has expressed an interest in becoming an actor now that Sechs Kies has ended its era. As the news about their break-up spread across the country and the world, the hearts of many fans broke, their dreams crushed, and tears shed. But despite the anguish, the fans of Sechs Kies will now and forever remain fans of Sechs Kies. To this date, no other group in k-pop history has crossed so many musical boundaries and completed so much in such a short time.

Credits: wikipedia.org & htruc@soompi