There should be explicit scenes...
http://www.asiaone.com/showbiz/sulli-says-explicit-nude-sex-scenes-necessary-real
http://www.imdb.com/title/tt6904062/?ref_=nm_flmg_act_1
http://www.asiaone.com/showbiz/sulli-says-explicit-nude-sex-scenes-necessary-real
http://www.imdb.com/title/tt6904062/?ref_=nm_flmg_act_1