A BILLIONER INLOVE IN SIMPLE GIRL( mamamoo)

There's a girl name solar (kim yong sun)
Simple girl not that rich kind hate guy
Hwasa (ahn hyejin) solar friends simple too but have a badass side ( cold to other)
Moonbyul ( moon byul) multi billioner
Have a kind cold cute heart and don't like a simple girl but one day one girl gonna change her life
Wheein (jung wheein) byul friends multi billioner too (cute kind cold always happy)