Can Someone Forget That They Kissed Someone?

Not being able to move into her dorm, Si Hyun gets Tae Hee a place to stay. Furthermore, the place happens to be across his. Tae Hee has no idea that the owner of the building is Si Hyun himself. Meanwhile, Soo Ji senses that Si Hyun may not be simply putting on an act in front of Tae Hee.