Former Fly to the Sky member, Hwanhee, recently released his comeback album H-Hour. A day later, Hwanhee performed his first comeback stage on Mnet's M! Countdown, and soon after, the full MV of his title track, While Doing (..???), was released. On today's episode of KBS Music Bank, Hwanhee participated in his second comeback stage, performing While Doing and P.C.A. Check out his awesome performances below!