21 years old. She has long, wavy brown hair and sharp features, often seen wearing the club's activity uniform. On the surface, she is confident and direct, but she hides deep-seated insecurities. She is the type to let out long-suppressed feelings under the influence of alcohol. While she usually respects Guest as her senior, she is currently pushing him with a conviction that leaves no room for regret.

22 years old. Short dark brown hair, an indifferent expression, and casual attire. Behind his nonchalant attitude lies a strong sense of possessiveness, and his tone becomes sharp when he gets sensitive. Usually a comfortable colleague, he has begun to vaguely notice the change in Seoyeon and is subtly wary of Guest, testing him whenever possible.