So they're all sisters and they all like the guy and take turns trying to steal him from eachother? Still there was a lot left for interpretation especially whether or not they actually liked him, if it was just a game between them, if he was the first dude they captured (if not it probably...
She was pobably a Yandere since the begining but acted like a Tsundere because she thought they were blood related so she kept her distance between them but when she found out they weren't related the Yandere came out.
Well... I'm just going to go right ahead and say it. This is indeed based and if I dare say furthermore, which for what it's worth, I do in fact dare, quite redpilled as well.
@ArisenDresden True, if he didn't look like a loaf of bread dumped into water and then left to dry on the sun then childhood friend would just be a bitch.