Kibum made his music debut in 2006 with the K-pop group XING, alongside Cheon Hye Sung, Yume and Kevin Woo.
After receiving much attention from their new album, U-KISS starred in a third variety show called Chef's Kiss, in which the members were divided into several groups and had to complete several missions, such as coming up with new recipes and be part of restaurant crew.
[3] On December 29, 2010, Kibum setup HnB Company together with his older brother Kim Hyung Jun, a character business based on his original creation, PiroPiro and SiroSiro.
On June 17, 2011, it was announced that Kibum, together with 5 other entertainers (Moon Chun Shik, Lady Jane, Kim Ho Young, Kwak Hyun Hwa, Gu Bon Hyung) would join a new reality show by GTV '드림메이커' (Dream Maker) as mentors (or known as 'Dream Planners').
Shortly after the Kagoshima event, it was revealed that he would be having his acting debut in a Japanese musical 「絆２０１１ 少年よ大紙を抱け！」("Bond 2011, Boys Be Ambitious"), as Allen, a full-time Korean exchange student.
[7][8][9] He had another short stint in acting as a cameo in Japanese drama 「孤独のグルメ」 (The Lonely Gourmet), which was aired on TV Tokyo on February 22, 2012, at 00:43–01:13 JST.
[13] Kim Kibum is set to release his debut solo CD entitled Dream (Japanese: ドリーム) on December 26, 2012, in Japan.
[14] However, on November 15 Kibum revealed through his official Japanese blog that another song titled 'MELODY', composed by Tamaki Koji, had been added to the track list.
[15] Later on, it was revealed via Kibum's Twitter that his friend, LeeU (Lee Seung Hyun), had contributed in the making of the single album.