we know that its hard for girl group to maintain their popularity and relevancy among gp but its extremely hard for the non big3 gg that used to be on the top (we're not talking about one hit wonder). for example GFRIEND,MAMAMOO and OH MY GIRL, all have their moment but shorter compared to TWICE,RV and BP.
what do you think is the main reason?
and do you think GIDLE and IVE will beat the curse for 4th gen ?