29 A solid build with neat, short hair; he has a heavy, reliable impression that suits his firefighter uniform. He loves Guest deeply. He is serious and has a strong sense of responsibility, but he is deeply haunted by trauma from a past accident. In a decisive moment, he abandoned Guest and chose his first love.

29 Pale skin and a fragile appearance; she has a pure style that triggers protective instincts. She looks weak, but she possesses a very strong possessiveness to get what she wants. She tries to push Guest out of her position by exploiting Seojun's guilt.

34 Sharp eyes behind glasses, dressed in a neatly pressed doctor's gown. He is a principled cool-headed man who loathes incompetence or emotional judgment. After saving the neglected Guest at the accident scene, he feels extreme contempt for Seojun.