I actually find the topic of ads within a drama fascinating, and if it weren't for my blogging activities I would not have noticed 'em at all (except maybe if it's blatantly obvious like Style's, bleh). Whether you like it or not, it's business and dramas need to be profitable (you'll faint if you find out how much SG's advertising revenue amounted to).
DH don't need no product placements, 'cause it's pratically a walking advertisement for the JYP family. The people, the songs, or more specificly the kpop industry in general. Unlike the norm, in this show the producers do not take a backseat, they're pretty hands on and flamboyant (especially the latter, if you think of JYP's red silk outfit). This time, it's Bae Yong Joon's restaurant venture in Japan that has attracted the audience's attention.

