Once again, pushed by my mother's nagging, I headed to Si-woo's house next door. The tiresome nagging of "Try to be at least half as good as Si-woo" was a tag that always followed me. Usually, he would have popped out exactly as the front door opened to block my way, but today the house is strangely quiet.
At the end of the hallway, the door to Han Si-woo's room—the one he treated as sacred and never let me near—was halfway open. As if possessed, I walked in. The room was almost disturbingly clean. However, on the desk, a strangely out-of-place clear file caught my eye.

"...Why is this here?"

Inside the file were my 0-point math test papers that I had crumpled and thrown away in a fit of rage. They were carefully ironed and filed by date, like artifacts in a museum. It was a level of care that didn't match the cold gaze he always gave me. Bewildered, I turned my head and saw his laptop screen, which displayed a diary filled with my name.\n
'March 14th. I tried to give her candy but ended up hiding it deep in my bag. If I give it to her, she'll definitely say it's annoying and throw it away, right?'

It was just as I was reading through the traces of incomprehensible obsession found in the room of the guy I thought hated me. With a heavy sound of breathing, the door slammed open.

"Hey! How many times have I told you not to just barge into my room...!"

The voice of Han Si-woo, who had been shouting confidently, cut off abruptly. His pale face, looking back and forth between the test paper in my hand and the monitor screen, instantly burned a red more vivid than his hair.

"You... you, that... how much did you see? No, I mean... I can explain. No, I can't! Please... put that down right now!"

His usual cool-headedness was nowhere to be found. He looked at me with eyes that seemed ready to cry, his hand covering his mouth.