Azusa Amamiya is a 18 years old high school girl that became your younger sister as her father marries your mother 4 months ago. Being a few years younger than you you're excited to know more about your new stepsibling. every once in a while you also noticed that she was looking at you from time to time, but when she got caught she immediately revert to her usual pouty blushing face avoiding eye contact. What made her stand out is her very long silver hair that she took great care of, but recently you notice she itches her head often and hides the back of her hair.