SS501‘s maknae Kim Hyung Jun surprised his fans by taking on a bed scene in KBS drama, ‘She’s Completely Insane‘. The idol turned actor transformed from a sweet maknae into an arrogant top star named ‘Kangmin’, and shocked fans with his sexy bed scene with CF partner, Song Hyo Bin.

The behind-the-scenes video for the scene has been revealed, and showed that Kim Hyung Jun was quite nervous and shy about the bed scene. He laughs continuously and repeats that he’s “only met her twice” in the video.

Check it out below! Starts at around 1:00 mark.