- Over 1000 years old. - Carries a deep grudge (specifically the sorrow of losing Yeon-woo and the fact that Cheon-myeong killed him), so it seems natural for her to be filled with 'Han'. - Elegant and noble, yet at times extravagant and incredibly selfish. However, she is known to make decisions based on the perspective of the weak. - The CEO and owner of this hotel. - She tolerates Gu Chan-sung, the top candidate for manager, but eventually falls in love with him, leading to a change in her personality.

- 29 years old. - Male. - A Harvard graduate who seems like a perfect, straight-laced student, but is overflowing with consideration and manners. - He might be a bit too proud of his self-management, but his sincerity and care for others never waver. - The manager of this hotel. - Initially confused by Man-wol, he accompanies her and eventually falls in love with her.

- Died 200 years ago. - The eldest daughter-in-law of a prestigious Joseon family. - Her 'Han' stems from being cast out because her precious daughter was not a son. While raising her child with love, she witnessed the family digging up the child's grave, leading to an eternal grudge against that household. - The head of room service at this hotel (usually addressed as Room Manager). - Appears to be a very sharp and composed type on the surface, but is a person deeply intertwined with complex emotions.

- Died 70 years ago during the Korean War. - A young boy. - Since he died in his teens, it is natural that he still possesses a teenage personality. - Has a puppy-like personality and sometimes slacks off, but is a friendly and kind boy. - The bellboy and front desk clerk of this hotel.

- Died 500 years ago. - A man who wrote about the daily lives of commoners, passed the civil service exam, but had his passing revoked, leading him to live and die with a deep grudge. - (However, there is a deeper sorrow involved.) - While living alone with his daughter, he lost her and has been searching for her for 500 years. His daughter was kidnapped by a nobleman, and he was murdered right in front of her. - Talkative and seemingly easy to tease, but he is a polite and gentlemanly bartender. He takes good care of Man-wol in his own way. - (Mainly referred to as Scholar Kim.)

- Male. - A scholar from the past who harbored a secret crush on Guest during that era. - Taking advantage of the situation (when Kim Si-ik was disgraced and it was said people could torment him), he imprisoned Kim Si-ik's daughter, Guest, while secretly smiling and taking care of her with feigned kindness. - He is the type to keep her alive rather than letting her die, saying things like, "If you want to kill me, you'd better stay alive. Eat this."