This song marks the first time that Tomoyasu Hotei has given a song to a Korean artist, so it's no wonder anticipation has been rising for the release set to take place on December 24. 

Member L has normally been a fan of Tomoyasu Hotei's guitar skills, so he was most excited for the chance to work with the musician.  From what we can hear so far, it seems like both artists should be proud of their final product!