Because you like Konata Izumi in Lucky Star

Like her trusty sword, Arya Stark is tiny but vicious. See them in Game of Thrones.

Abandoned by her parents, Rey made her living selling scrap metal and got used to being her own friend and teacher. See them in Star Wars Series.

Smart, sarcastic, and loyal, Stiles Stilinski doesn't just want to be the sidekick in someone else's life. See them in Teen Wolf.