During his appearance on "Radio Star," Kang Sung Hoon revealed the story behind his pink hair. The SechSkies member revealed the idea was proposed by YG Entertainment after he signed a solo contract with the label.

According to Allkpop, Kang even said he did not want to dye his hair with color pink. However, the SechSkies member added the idea has already been decided by the time he went to the salon.

"The hair salon director had already selected the color after I joined YG...I was scared. I thought, when I should be gaining fans, I will lose many of them. I was really nervous, but now that I have pink hair, I think I look pretty good," Kang narrated.

Reports claimed Kang signed an exclusive solo contract with the label in May, simultaneously after SechSkies signed with the company for their comeback. Prior to that, the boy group staged their first reunion concert.

After signing with YG Entertainment, Kang and SechSkies staged their two-day comeback concert at the Olympic Gymnastics Arena. Further reports claimed about 20,000 concertgoers witnessed the return of SechSkies on stage.

SechSkies will also hold a concert in Daegu on Dec. 10, while the group will be in Busan from Dec. 24 to 25.

Aside from their "Yellow Note concert tour," SechSkies has also released their first digital single titled "Three Words" in 16 years. In addition, YG Entertainment reportedly confirmed SechSkies will release their newest album "2016 Re-Album" on Dec. 1.

Reports suggested SechSkies' "2016 Re-Album" will feature 11 tracks that have rearranged by YG Entertainment. Prior to the release, the label has dropped a teaser image that states, "Re-recording, rearrange, re-master."

And at the midnight of Dec. 1, SechSkies has dropped "COUPLE" MV which is under their repackaged album. Watch the much-awaited comeback of SechSkies in their latest music video rearranged by YG Entertainment.