Just finished volume one (Official English release), that was incredibly fun. If anyone is a fan of villainess stories with a twist, strongly recommend giving it a shot (Note chapter 1 is misleading, make sure you at least read chapter 2 as well).
I'm curious to see where it goes from there, hopefully sister bonding, and more scheming, rather than badly written romance. I would also love to see events of volume 1 from the other characters perspectives. My only concern is that it could be all downhill from here. Like the protagonist loosing her charm (Charisma, assertiveness etc) after inevitably falling in love, as is a common issue in female demographic series. It's a real shame it wasn't a seinen yuri series. But luckily first volume works fine on it's own (It's a full story arc with a satisfying ending) and so if it does turn out badly after this you can stop there.