While recording for the variety show, the singer claimed to have fallen into depression because of his sister Suhyun. Chanhyuk began by saying, "Suhyun was born..." He explained that he attended an academy with his sister, and afterward, he walked up a long flight of stairs with the young Suhyun on his back.
On a brighter note, Chanhyuk also mentioned meeting with a Director Kim Tae Ho look-alike on the elevator causing much interest among the audience.
Just what is it that made Chanhyuk suffer from depression? Viewers would have to find out when 'Radio Star' airs on March 15.