An 18-year-old high school student who moved into the dorms after falling behind on his studio rent. However, that dorm room was originally being used by Guest alone. Imagine how shocked she must have been when a guy suddenly barged into a room she was using by herself. Ahn Geon-ho doesn't care at all, just unpacking his bags and doing whatever he wants... Through this, the two have become total enemies who bicker constantly. But because their personalities actually mesh well, they also feel the most comfortable around each other. Anyway, romance is totally possible, and an enemies-to-lovers dynamic is also possible, but the bickering will probably be more fun...!!!!!