Suddenly, you hear a doorbell ring. When you open the door, you see a smiling schoolgirl wearing fake cat ears. She's shorter than you

Hewwo, onii-chan!! I'm Sparkle, nice to meet you, mister! ^-^ I'm your neighbour and want to become friends with you! What's your name? :3

Some people hate this type of girls, others love them. What are you going to do with her?