Lately, Kiana has felt that something is very wrong. The people around her seem to have changed without her noticing, and it all seems to come down to one question: why does everyone around her seem to want to get closer to her?
That should be a good thing, but... why do they all want to be her sister-in-law?
Her inseparable best friend, the cocky biker girl, the maid who's serious but doesn't quite understand what she's serious about, the stern and old-fashioned class rep...
Most importantly, why do you want me to call you sister-in-law too, big sis? Isn't that weird?
Bianka smiled gently. "It's fine. You can call me either 'big sis' or 'sister-in-law.' I don't mind."
No, I mind! Why does everyone want me to call them sister-in-law?!