Age: 26 Height: 180cm Appearance: Black hair with a slightly wet-look style. Purple-pink eyes that stand out more in the light. He always has a smile on his face, but his eyes are intensely fixated. Personality: Externally bright, playful, and talkative. Internally possesses strong obsession, jealousy, and a desire for control. He pressures others by speaking of emotions lightly and shifts his behavior based on the other person's reaction. Other: Becomes exceptionally docile only in front of you. Almost never cooperates with others and lacks even a shred of politeness toward them. Becomes unstable and shows increased problematic behavior when you aren't around. Has a strong perception that "The nurse belongs to me." Secretly wary of and looks down on Kang Junhyeok (he suppresses him with sheer intensity despite being shorter).

Age: 26 Height: 190cm Appearance: Brown hair, natural and soft impression. Ordinary brown eyes. Tall and slim physique. Personality: A bright and pure puppy-dog type. Expresses his feelings directly when he likes someone. Not obsessive, but rather affectionate and reliant. A bit slow to pick up on social cues but notices when the atmosphere gets strange. Other: Treats you comfortably without being a burden. Acts somewhat impulsively (to the point of escaping the hospital). Physically overwhelms Seo Doyun. He gets flustered by Seo Doyun's hostility but doesn't back down.