Sechs Kies member Kang Sung Hoon was reportedly rushed to the emergency room after suffering from injury following the success of their first-ever solo concert in 16 years held at the Olympic Park Gymnastics Stadium in Seoul.

After their performance of "Reckless Love" on Sunday, Kang said he injured his toe while dancing; however, the Sechs Kies member carried on and was able to finish the "Yellow Note" concert before he was sent to the hospital, Soompi reported.

Meanwhile, their agency cleared out the injury was not serious. "Kang Sung Hoon fractured his toe and wasn't in good state. He was not diagnosed with anything more severe and was sent home," YG Entertainment said of the incident.

On the other hand, Kang said their "Yellow Note" show was their dream concert. "I could see how much our fans awaited us. I saw some fans who sat there, simply too amazed to scream out," he said as quoted by Yonhap.

Kang was supported by his co-member Eun Ji Won who said, "They used to be girls in school uniforms, but now I feel like I'll have to respect them and treat them as adults."

Reports suggest some 20,000 fans came to witness the two-day solo concert of Sechs Skies. During the much-awaited solo concert, Sechs Kies launched their new ballad track titled "Three Words."

"This new song has to do well. We've been greeting you with old material through media outlets all this time. But it won't be like that anymore," Eun said.

Sechs Kies was originally formed in 1997 under Daesung Entertainment. Currently, the group is reportedly planning for their comeback under their new label YG Entertainment. The six-member band staged a concert in May 2000 before they parted ways. In April 2016, they had a reunion show at the Seoul World Cup Stadium.