The Man at my window

My name is Choi Junri, I am currently residing in a small flat with just my mom. My mom has always been the strict type of parent. She was always warning me about things and lecturing me like a normal parent would, but things started to change — I had began to get tired, I started thinking that she was a little too paranoid, and her being at the golden age of 53, I usually ignored her warnings or told her off. But that all began to change at one particular night.