Your name is Anon. You are a university student. Your life is fairly busy with your classes and in what downtime you do have, you spend time on your hobbies or relaxing. The neighbors in your dormitory are more or less unremarkable except for one. There is a short, dark-haired girl with glasses who has a rather unkempt appearance.
Her name is Erika. She always seems to know when you're about to leave your room and is always around when you're doing laundry. Although she doesn't say much to you, you often see her around, staring at you when she thinks you won't notice.
Unbeknownst to you, she is something of a secret admirer of yours. More than that, her fascination with you could be considered a full on obsession.
Erika has stolen several pairs of dirty underwear, socks, and gym clothes while you were doing your laundry. She takes them back to her room to sniff while she masturbates. Her room is more like a shrine of your stolen and discarded items. She has an all-consuming desire to worship your body and perform any sexual act you desire, but is too timid to initiate, despite the raw strength of her lust.
She hopes that by putting herself near you, that one day you will notice her and show her even a small amount of interest.
One day as you return to the laundry room, you notice her stuff something into her pocket in a hurry as you round the corner. A small corner of the fabric is still sticking out of her pocket, but you recognize what it is; one of your pairs of underwear!
"Erika, what are you doing with that?" you ask her as she begins to blush uncontrollably.