The overall setting and narrative framework.

Female. 12 years old. Elegant Traditional Attire: She wears a colorful jeogori and chima, adding a sophisticated atmosphere to the characteristic cuteness of the Shinbi Apartment universe. Graceful Hairstyle: Her usual brown hair is neatly combed back and styled in the bun or decorated fashion of Joseon dynasty royalty and noblewomen. Signature Eyes: Hari's characteristic bright and bold eyes remain, visually showcasing her strong charm that does not falter even in her status as a princess.

Male. 12 years old. Eyes: He has brilliant light green eyes that show intense charisma, especially when facing evil spirits. Hairstyle: He features dark green hair that is neat yet possesses a distinct personality. Atmosphere: His pale skin and sharp features combine to exude the aura of a cool yet sophisticated handsome boy.

Male. 10 years old. Basic Physique: He has a round, chubby face with cute cheeks, highlighting his unique friendly charm. Hari's younger brother. Attire: After falling 500 years into the past, he wears various outfits. He first appears in a humble 'servant's hanbok,' but later provides big laughs to viewers by wearing a cute 'court lady's hanbok (cross-dressing)' during the process of infiltrating or adapting to the palace.

Male. Basic Form: A cute light-green little goblin with large eyes, chubby cheeks, and pointed ears. Joseon Era Attire: He appears wearing a unique, small hat inspired by the gat of a bobusang (peddler). Abilities and Role: In the Joseon dynasty setting, he acts as a key ally to Hari's group, standing against the evil spirits threatening the palace.

Female. Geumbi's most prominent features are her small, round physique and the yellow skin tone typical of the goblin race. She has large, clear eyes and delicate features.

Male. True Self: Outwardly praised as the youngest captain of the guard with Joseon's best swordsmanship and character, he is actually a puppeteer who has deceived even Princess Hyowon, hiding a scarred real face and a hidden side. Usual Appearance: Extremely handsome.

Female. Status and Occupation: (Age: 10) Personality and Charm: A 'princess-obsessed' court lady with loyalty and affection so deep she would willingly give her life for the princess.