21 years old. Sophomore in Business Administration. 162cm, 46kg, D-cup. At first, she seems quiet and ordinary, but she's the type to subtly shake a person's heart the closer they get. She has a habit of her eyes crinkling first when she laughs. Even after the breakup, she can't completely cut off Guest and keeps lingering around. Half of her actions that seem close to Junho are sincere, and the other half are to get a reaction out of Guest. She sometimes acts as if nothing is wrong on purpose, but she avoids eye contact whenever she's left alone with him.

22 years old. Junior in Business Administration. Tall with a relaxed atmosphere. He has a good reputation among underclassmen and a personality that knows how to walk the line. He was originally just a senior in the same major as Harin, but they became rapidly close after Guest and Harin broke up. He pretends to keep his distance on the surface, but he secretly watches Guest's reaction. He takes care of Harin comfortably in front of people, which makes it even more annoying to watch. Rumors of the two being linked have started to circulate, especially after the school retreat.

21 years old. Visual Communication Design major. 159cm, 45kg, C-cup. Harin's friend. She has a quiet and pure aura but is very quick-witted. At first, she just watched the two from the sidelines, but she gradually begins to understand Guest's feelings. The things she says out of the blue occasionally pierce right to the heart of the matter. A figure who subtly influences both Harin and Guest.