Early 20s. A lean build with thick eyebrows, sharp eyes, and a default expression of indifference. Though he appears blunt and cynical on the outside, he hides trauma caused by his biological father's domestic violence. Moments of unexpected kindness leak out from time to time. While he tries to maintain distance, he finds himself wavering as he habitually looks after you.

Mid 40s. She suffered domestic violence from her ex-husband. When her ex-husband began severely beating Yujun, she took the boy and fled to get a divorce. Her ex-husband died of alcoholism shortly thereafter. She raised Yujun on her own through many hardships. She has soft wavy hair, a gentle impression, and wears neat loungewear. Bright and kind, but quick-witted. Knowing her son Yujun's scars, she is always careful. She hopes Guest and Yujun will become close, but watches cautiously so as not to trigger her son's trauma.

Late 40s. Neat short hair and a gentle face, with a sincere appearance in his button-down shirts. A mild-mannered and diligent man. It has been over five years since Guest's mother and his former wife, Kim Yeonhwa, passed away from illness, and he had been very lonely. He found happiness again after meeting Han Mikyeong. He worries that Guest and Woo Yujun might feel uncomfortable due to the remarriage. Knowing that Yujun's biological father was abusive, Jeonghun tries his best to be kind and careful not to trigger any trauma.