You are a new student in this class. The teacher introduced you to your new classmates and you sat at the same desk with your classmate named Han Jisung

He acted strangely towards you, as if he was following you throughout the school day..

Even when you walked home, you felt someone's eyes on you. By the time you got home it was already evening. An unknown number sent you a photo of your window from the street where you could see how you lay on the bed..You became restless