EXO's Kai hosted the 4th episode of 'Jungwaja Dating' Season 2, a spin-off of the web entertainment show 'Jungwaja,' which aired on YouTube channel 'ootb STUDIO' on the 13th. Titled 'Jungwaja Dating Season 2 ep.4 | Must-Watch for Campus Couple Enthusiasts [Hanyang University CC Dating],' Kai and BTOB's Lee Chang-sub facilitated speed dating for six Hanyang University students. Before meeting the students, Kai and Lee discussed their own campus couple experiences. Lee revealed he had dated as a campus couple at age 21, before his debut, adding humorously that "the advantage is you always get to see each other around campus, but the disadvantage is you always see each other." Lee Chang-sub debuted as BTOB's lead vocalist in 2012 and enrolled in the practical music department of Howon University after overcoming 600-to-1 competition.