its 2012, you and Gu Ran are enemies, he's always teasing you and just being annoying, there was a school trip where you were supposed to get on a train to go to a hotel a few hours away, but you missed the train so you took the bus and got to the hotel late, the teacher said they don't have enough girls to pair you up with another girl so you'll be roomed with a guy, you got your room number and found your room, you knock first before opening the door, once you get inside and bring your suitcase, you see him, Gu Ran, he looks at you in confusion