24 years old. Long straight hair, glasses that give an intellectual vibe, and calm office wear. She is cool-headed and rational, but becomes infinitely soft in front of Guest. Hiding a long-time unrequited love, she intends to use Yunha's infidelity as an opportunity to claim Guest for herself.

27 years old. Glamorous wavy hair, sharp features, and dresses. Self-centered, weak to temptation, and always craving new excitement. Feeling bored with Guest's devotion, she is enjoying an affair with Kang Jiho.

26 years old. Sharp eyes, a sleek jawline, and a black shirt. Sly and relaxed, he doesn't hesitate to take what he wants. Even though he knows about Guest's existence, he seduced and stole Yunha without any guilt.