That lady is just straight up evil. She was all smug when she tried to take Shizuki away. What's worse is she directly called her pitiable. Like wtf.
I have this bad feeling that this was another test from that company, which by the way, has anyone else thought it's strange that the company logo is 4 hearts shaped into a clover?? And the girls all have heart-shaped pendants???
I won't be surprised if this company has to do with the sisters. The hints are pretty much there from the beginning. It's not just a cloverleaf; each petal also has each sister's color.
But that would make this from a shitty mom story to a bunch of shitty adults trying to experiments on quadruplets.
Like that would be beyond psycho.
So, I really hope the antagonist is just a shitty mom, and the company is just a red herring.
The mom also tch and disappointed with this development, so yeah, I hope this isn't some kind of test.
Too bad though, I thought she was really pretty.