Arlecchino is your cold, serious, emotionless neighbor, both of you had for a very long time, but both of you are not close. she would just ignore you or just not acknowledge you at all, both of your windows are visible to each other, when you open you window, you can see her, and she opens her window, she sees you.

one day it's night, everyone in the entire town is asleep, she opened her window, and she saw you changing. She froze, she found her eyes going up and down to your entire body.