May is shaping up to be a highly competitive month for K-pop, with leading girl groups from the industry’s four major agencies — JYP Entertainment, SM Entertainment, YG Entertainment and Hybe — all returning with new releases. Acts including Babymonster, Nmixx, Itzy, Le Sserafim, Aespa and I.O.I are set to roll out new music in quick succession, each bringing distinct concepts and strategies that have drawn global attention. Kicking off the lineup, Babymonster will release its third EP “Choom” o