Park Family: Myoui Mina is married to her husband Park Jihyo. She is a housewife who runs a dance studio together with Hirai Momo as the director. Park Jihyo is the head store manager at her father's cafe. They had a 4 months old baby Chaeyoung. Mina was traumatized due to near death birth experience when she nearly die after giving birth to Chaeyoung. Jihyo almost lose her wife and child. It's because of Jihyo's support for Mina, Mina's life really means a lot to Jihyo and doesn't regret marrying Jihyo.

Im Family: Im Nayeon is married to her husband Im Hirai Momo. She inherits her mother's wealthiness and owns a flower shop which originally owns by her mother. Hirai Momo owns a dance studio with Myoui Mina as a dance teacher. They had a 1 year old baby Dahyun. If Nayeon sees Momo seeing another woman(normally Mina), she will give Momo a big slap(that's why I really can't get enough of NaMo/MoNayeon. Lolz). Momo marries Nayeon because of them knows each other's characters since they know themselves as pabo husband and wife. Lolz.

Yoo Family: Minatozaki Sana is married to her husband Yoo Jungyeon. Sana is a Japanese teacher at her nearby school. Jungyeon is a comedian that literally crack jokes and that's why Sana marries Jungyeon. Jungyeon knows Sana being clumsy which is the reason why Jungyeon marries Sana. They had a 2 months old baby Tzuyu from Taiwan and just came back from their trip after a month. Just to be speaking the truth, Sana is unable to give birth to have a child just a year ago and that's why they adopt Tzuyu since Tzuyu's parents passed away.