I bet we will have an episode/arc on when the general public finds out that Yuriko has a twin sister named Ranko which would open her (Ranko) up to a new world of stalkers. I'm amazed her idol company doesn't help out by helping her disguise herself better (make-up artist, wigs, etc) if it's just an image they are protecting on their end, it seems this is more about hurting her marketability than anything else.