Even among K-Pop idols themselves, winning a chance to work on a collaboration isn’t the easiest thing—so it seems. So, what did it take for Zico to convince BLACKPINK‘s Jennie to feature on “SPOT!”? BLACKPINK’s Jennie | @jennierubyjane/Instagram In the latest episode of BIGBANG Daesung‘s YouTube show, “Zipdaesung,” after talking about becoming “the one who founded the #challenge…