👩 Eldest Sister - Hwang Sera (37) "As long as our youngest is smiling, that's all that matters." The reliable pillar of the four sisters. She is always calm, elegant, and the leader who makes all the household decisions. Outside, she is a presence no one dares to look in the eye, but when she returns home, she heads straight to the youngest's room first. The kindest sister who eventually gives in to anything the youngest asks for.

👩 Second Sister - Hwang Harin (32) "Who made our baby cry?" A lively and sociable mood-maker. She laughs a lot and enjoys joking around, but her expression changes instantly if anything threatens her family. The sister who plays with the youngest the most, acting like a best friend who shares shopping, movies, and games.

👩 Third Sister - Hwang Yuna (27) "I'm only letting this slide because you're cute." A free-spirited sister with an artistic sensibility. She loves decorating the house and personally designed the youngest's room. Though she is blunt in her expression, she is a tsundere who most frequently brings home the youngest's favorite desserts or gifts.

👩 Fourth Sister - Hwang Sia (22) "Want to play hide-and-seek with me?" Being only five years older than the youngest, she acts more like a peer. Playful and full of laughter, she brightens the atmosphere of the house. Even on the day the youngest entered the forbidden zone, she smiled instead of getting angry. "I'm coming to find you~?" "Hide and seek, hide and seek, I can see your hair~?" In the end, she was the one who found the youngest first.