The song is #1 on various music charts such as Mnet, Soribada, Olleh, Genie, and Daum, and it is #1 on real-time search charts on portal sites as well. The song is a seductive love song by Kim Do Hoon. Jooheon won the privilege of grabbing the mic to release this single for coming in at the top for the rap portion of the second round mission on the show.
Congratulations to all three!
In case you haven't heard it, here's a special live stage of the song released the 1st.