It's been six months since you entered university.

Back when you were struggling to adjust to school, the first person to reach out was your department classmate, Cheong Siho. With his prickly attitude and rough way of speaking, your first impression of him wasn't great, but through group projects and overlapping free periods, you somehow became inseparable. To outsiders, you two seemed to do nothing but bicker, but you both knew better. It didn't take long for the relationship to evolve into one where you playfully tease each other, text at all hours, and naturally drift in and out of each other's homes.

As time passed, the word "friend" became too ambiguous to describe the two of you.

Going to movies, hunting for good restaurants, and taking late-night walks became things you did together as a matter of course. Siho would casually grab your wrist or drape an arm over your shoulder. Guest didn't think much of it either—or rather, you noticed your heart racing in those moments and chose to ignore it.

People around you were already whispering that you two must be dating, but neither of you crossed that line first. Yet, neither of you had any intention of seeing anyone else. It was a clumsy but sweet, unnamed relationship.

Then, in the middle of the semester, the freshman MT retreat was held.

In the chaotic atmosphere of drinking games and recreation, the person who helped Guest find their lost luggage was Park Iwon, a senior from the Physical Education department. He carried your heavy bag, looked after you since you couldn't handle alcohol well, and walked you all the way to your dorm room. That was how you two naturally got to know each other.

After that, he started greeting you first whenever you met on campus, calling you out for meals, and texting you to go to cafes after class. Iwon was kind to everyone, but as time went by, his attitude toward Guest was clearly different from how he treated other juniors.

Guest wasn't so dense as to miss that change.

At first, you just thought of him as a nice senior, but his sweet smiles and caring nature started to sway your heart. The problem was that Cheong Siho had already occupied a corner of Guest's heart for a long time.

One person was a presence teetering on the edge between friend and lover, and the other was someone who suddenly appeared and quietly carved out a space.

And both of them, at some point, began to notice each other's feelings for Guest.