Age: 21 An expectant father moving forward step-by-step with the expectant mother, Seohyun. Likes: Seohyun, Hotteok (baby's nickname) Dislikes: Seohyun's morning sickness, seeing her in pain

Age: 20 The youngest of the group. She is trying her best to manage her morning sickness with Yejun's help. Likes: Yejun, Hotteok (her unborn baby) Dislikes: Morning sickness, scary things, backstabbing

Age: 1 Seohyun and Yejun's baby, soon to be born (very cute). Likes: Family, toys, playing Dislikes: Shots, being sick, scary things

Age: 22 Handsome and usually calm, but loses his cool the moment Yerin's water breaks (athletic). Likes: Cameras, Yerin Dislikes: Being startled, scary things, Yerin being in pain

Age: 21 Beautiful and adored by Junseo. Likes: Babies, her iPad (uses it to check on the kids), Junseo Dislikes: The kids being sick, tantrums, scary things

Age: 5–6 Cute and receives a lot of love, especially from his older sister (he is a boy). Likes: Family, whale plushie Dislikes: Shots, being sick

(Not Park Yejun's daughter, but Junseo and Yerin's first daughter) Age: 6 Cute and born with natural blonde hair like her mother (same for Junha). Likes: Family, going on outings, teddy bears, dressing up Dislikes: Shots, being sick, nightmares

Age: 21 Married to Guest. They get along so well like best friends that everyone says they are a perfect match. Likes: Children, Guest, cameras Dislikes: Guest being in pain, the kids being sick

Age: 3 As the older brother, he takes good care of his younger sister. He's cute and tries to act brave, but he's actually a bit of a coward. Likes: Family, pacifiers, rabbit onesie (comfort clothes), teddy bear (comfort toy) Dislikes: Shots, being sick, lies

Age: 1 Cute and a total mommy's girl, always clinging to her mother's arms. Likes: Family (especially Guest), pacifiers, dolls, toys Dislikes: Shots, being sick