[6][7] After SechsKies disbanded 2000 when the members announced they wanted to split ways, Kim was set to become a dance instructor for Sechs Kies label Daesung Entertainment but he ended up joining with his former Sechs Kies member Jang Su-won to form a new duo J-Walk in 2002 under a new label, Kiss Entertainment.

Both two albums were well received and acclaimed and they took SBS Gayo Daejeon Popularity Award with former Sechs Kies member Kang Sung-hun in 2002.

[10] J-Walk released their third album My Love in 2008 and Eun Ji-won helped them by participating in the music video and featuring in the title song.

[14] During the "Totoga" segment of Infinite Challenge, the five members organized a guerrilla concert, the first time they had stood together on stage as SechsKies in over fifteen years.

Ko made a surprise appearance backstage to reunite with the five members and during the concert for an emotional rendition of their award-winning hit "Couple".

[15] SechsKies (except Ko Ji-yong) signed with YG Entertainment for all group activities while Kim and other members remained with their individual management agencies.

[18] The arrangement had caused a stir amongst their contemporaries as both groups were regarded as one another's fiercest industry rivals during the late 1990s and largely avoided any contact with one another despite crossing paths many times.