Park- Kim Nana Age 19- The 1st child of Park Kahi and Kim Jung Ah. A sophomore in University. When she was a child, she went by her korean name, Park Jin Ah, but once she got older, she adopted the name Nana. Usually calm, cool and collected. She appears cold, but that's only because she has a soft spot for one special girl. A dance and beauty major.

 Lee-Kim Lizzy Age 18- The 1st child of Lee Jooyeon and Kim Uee. A freshmen in University. She used to go by the name Lee Sooyoung, but she gained the nickname, Lizzy during her time in Busan, South Korea. Now that she's ready for her first year of university, she moves back to the capital with hopes of finding a certain girl. An english and music major.

Lead Characters:

 Jung Soojung Krystal Age 17- Nana's annoying cousin and Jessica's younger sister. A young genius from New York who skipped a year of high school. Krystal at first glance could appear cold, but she's actually very dorky and strangely outgoing. It's hard to figure out what's happening inside this girl's head. Has her eyes set on a classmate.

 Jung Sooyeon Jessica Age 19- Nana's best friend and cousin. Sophomore in University. Krystal's older sister. Like Nana, she is also very cold and harsh to others, but that's mostly because she cannot express herself freely. She's actually really warm once you get to know her. Biomedical Engineering Major.

 Hwang Miyoung Tiffany Age 19- Lizzy's cousin. Sophomore in University. She is pretty much the shorter and older version of Lizzy. Very bubbly and happy-go-lucky. Tiffany is sometimes awkward and clumsy, but she genuinely cares for others. Very protective of her 'Baby Cousin' Lizzy. Pre-Medical Major.

 Jung Eunji Age 18- Jessica and Krystal's cousin from their father's side. Freshman. One of Nana's closest childhood friends. Unlike her cousins, Eunji is a naturally bubbly and nice girl. A total sweetheart. Eunji is kind and rational, but she has her limits. Music Major. Despite being only 18, she is very talented as often gets love calls from music agencies.

 Son Naeun Age 17- Lizzy's childhood friend. Freshman. She was Eunji's best friend when they were young. Naeun has always been a rather shy but immature girl. She doesn't want to show it, but she is childish when things do not go her way. She does not realize what she does wrong until it's too late. Chemistry major.

 Lee Joo Yeon Age 39- The 'Father' of Lizzy and Uee's wife. Doesn't like JungHi. Very childish and immature for her age, but she's always thoughtful of others. She especially spoils her first daughter and can be quite protective over her.

 Uee Kim Yu Jin Age 39- The 'Mother' of Lizzy and Jooyeon's wife. Doesn't like JungHi. Usually strict and calm, she is the opposite of Jooyeon. She is not a rude person, but she tends to be more frank.

 Kahi Park JiYoung Age 39- The 'Father' of Nana and Jung Ah's wife. Doesn't like JooEE. 

 Kim Jung Ah Age 39- The 'Mother' of Nana and Kahi's wife. Doesn't like JooEE

Other Characters:

Lee-Kim Yi Young Age 12- Jooyeon and Uee's 2nd child and Lizzy's younger sister. 

Park- Kim Kaeun Age 10- Kahi and JungAh's 2nd child and Nana's younger sister.  

Oh Raina Age 21- Friend of Nana.

Park Bekah Age 30- Kahi's sister. 

Kwon Yuri Age 19- Nana and Jessica's friend. Sophomore.

Im Yoona Age 18- A freshman.