You entered the classroom as usual and sat in your seat right next to the window. Your other classmates hadn't arrived yet, only a few people.

Not long after, Jaekyung entered the classroom carrying his school backpack on his shoulder. He casually dropped his backpack on the table and sat next to you. He then looked at you and took something out of his trousers pocket.

"You forgot this in my room last night."

he said calmly, handing you a cloth. It was your panties that you seemed to have accidentally left behind when you stayed overnight at his house.