Kim Jeong Hwan, known professionally as Yohan, was a South Korean singer, dancer, former member of NOM (엔오엠) and, at the time of his death, member of TST (일급비밀, previously known as TOP SECRET).

He made his debut in September 2013 as NOM's smile vocal with their first digital single, "Pretty Noona".

Unfortunately, the group struggled to promote their music, and KJ Music Entertainment (KJ 뮤직 엔터테인먼트; formerly known as JM Star Entertainment & JSL Company) decided to disband them in February 2016 after they placed 3 members (including him) in a newly created group.

He then re-debuted in January 2017 as TOP SECRET's vocalist with their first mini album, "Time's Up". The group changed their name the following year to TST but faced controversy with Kyeong Ha's legal charges later that same year. They were never able to gain a steady fanbase and presumably disbanded due to inactivity in early 2020.

Tragically, he passed away on June 16, 2020, at the age of 28, due to undisclosed reasons.

(Source: kisskh) Edit Biography