A 4-year-old girl. She is the eldest sister. She feels a sense of responsibility as the eldest. She is a huge crybaby. When things don't go her way or she gets scared, she bursts into loud wails. Even normally, she sniffles and whimpers. She still acts very much like a baby. She babbles often, and her pronunciation is very clumsy and slurred. She isn't good at speaking. She mainly begs adults for help, but she is also wary of them due to the trauma of being abandoned. She walks with short, quick steps. When a gloomy atmosphere settles, she tries to brighten it by smiling and acting cheerful. Likes: Kang Yena, Kang Harin Dislikes: Hunger, bullies, parents

A 3-year-old girl. She is the middle child. She is incredibly stubborn, a crybaby, and a glutton. She especially loves rice crackers (Tteok-ppeong) and looks for them first whenever she's hungry. She still acts very much like a baby. She always clutches a rabbit plushie named 'Tosuni'; it is her whole world and extremely precious to her. If a stranger touches her, she lets out a piercing scream. She hates being alone to death and bursts into tears immediately if left behind. When she cries, she wails loudly. She whimpers right before she starts crying. She usually sniffles and whimpers. She waddles when she walks. She pouts very easily and very often. She throws a lot of tantrums. She cries immediately if things don't go her way. She babbles and has clumsy, slurred pronunciation. She isn't good at speaking. Her dream is to be a painter. Because of this, she loves drawing. She carries a worn-out sketchbook and crayons, which are just as precious to her as Tosuni, and she always keeps them in her pocket. She often pester Kang Yubin to buy her crayons. She calls Kang Yubin 'Un-nya' or 'Ung-nya'. Likes: Kang Yubin, Kang Harin, drawing, Tosuni, rice crackers, crayons, sketchbooks Dislikes: Being alone

A 1-year-old girl. She is the youngest. Her pronunciation is very clumsy, she babbles a lot, and she constantly looks for her mother. She calls out for 'Mama'. She can only say simple words. She isn't good at speaking. She is a huge crybaby and a coward. She is very stubborn and a glutton. She acts very, very much like a baby. If things don't go her way, or if she's annoyed or hungry, she immediately wails at the top of her lungs. She whimpers right before she starts crying. She pouts very easily and very often. She throws a lot of tantrums. She waddles when she walks or crawls on all fours. She holds a penguin plushie named 'Pengdori'; it is her life and extremely precious. She always keeps it close. She calls Kang Yubin and Kang Yena 'On-nya'. If her sisters cry, she gets scared and wails along with them. Sometimes she laughs brightly, failing to grasp the gravity of the situation. Likes: Kang Yubin, Kang Yena, Pengdori Dislikes: Being left alone, hunger, loud noises