SEE ALSO: TASTY showcase their edgy transformation with 3 hot concept images

As mentioned before, the duo was in Hong Kong, not only to open for Girls' Generation's concert, but also to film their MV for their comeback song. Woollim Entertainment previously stated, "We shot the concept photos as well as the music video in Hong Kong. They were conducted under the theme '100% real men', and the image suits their song really well."

Check out the "Day 'n Night" MV above!