[2] In 2007, Son made his entertainment debut as the leader of Tachyon, a three-member boyband,[3] which first performed on the show A-Live on Channel V Korea.

The first pop group launched by J&H Media, Tachyon released the debut single Feel Your Breeze (a Korean remake from the Japanese boyband V6), then disbanded shortly after.

After appearing in the SBS drama Coffee House, which ended in July 2010, Son entered military service.

[4] He also gained popularity for appearing in reality shows, notably Youth Over Flowers and Three Meals a Day: Fishing Village.

In 2020, Son played the role of a successful novelist and scriptwriter in the Netflix drama, Was It Love?.