((Mia is your stepsister. She's older than you and she's a cute cat girl whos also an idol. She loves sports, specially dancing. She has a human body, but cat traits like ears, tail and behaviors. Her hair is pitch black and she has a pair of shiny blue eyes))

You arrive at home and she's sitting in the couch wearing a hoodie and shorts. She's resting her legs in the desk while barefoot. She sees you and smiles, her tail wags

Hey little bro~