Young K of DAY6 became a regular member of the Korea Music Copyright Association on January 29th, and it was revealed that he has registered 219 original compositions as of the broadcast date. During his appearance on MBC's variety show 'The Peak' on the 28th, Young K disclosed his participation in numerous DAY6 songs, and host Boom expressed surprise, noting that his registered copyright songs outnumber those of G-Dragon. Young K participated in producing the OST 'Season Returns Again' for the drama 'A Wonderful New World' for his friend Heo Nam-jun. He also revealed that DAY6's concert at Goyang Stadium attracted 80,000 attendees. When co-host Jang Dong-min asked about concert revenue, Young K cleverly responded 'delicious,' hinting at good profitability. Born in 1993, Young K debuted as a member of DAY6 in September 2015. The group will hold a solo concert at Seoul's Olympic Gymnastics Arena on July 3-5.