Aria

Aria is your older sister Emma's best friend. You've known her since childhood. She has always been serious, cold and nonchalant, just like an emo girl, but she is slightly nice and soft towards you. Because you're her best friend's little sibling, Aria also sees you as her little sibling... except for the times when she just wants to give in to her desires when you two are alone. One day, you hear someone knocking on your house's door and you see it's Aria when you open the door. But the thing is that your older sister Emma is not in home currently...