hi! I will post the characters first just in case you guys don't know what the role of each cast here or what they are in the life of both irene and wendy (some character's identities will not be revealed ;)). and I don't know how to explain myself and why there is a lot of family member in their family hehehe please forgive me and my obsession in kpop. and also I don't know what surnames can fit in each member of the family so I used bae & shon/son while the other characters stays the same, I hope that's okay w/ you guys :))

Bae Family - 6 siblings

Shon Family - 8 sibling

Characters :

Wendy Shon / Son Seungwan / Kim Sowan 

Irene Bae / Bae Joohyun 

Kim Jennie - wan bff in US

Park Sooyoung / Joy - rene bff

Kang Seulgi - soon to be wan bff

Kim Yerim - rene cousin/bff

Kim Jisoo - N/A

Park Chaeyoung / Rosie ( Son Chaeyoung ) - wan sister

Lalisa Manoban - N/A

Kim Sojung (Sowon) - N/A

line up: eldest to youngest

- - - Son Siblings - - - (other family members are in another country but all of them will go back to Korea)(the 4 youngest members are all in Korea)

Son Miyoung / Tiffany Shon (in America)

Son Seungwan / Wendy Shon (in America)

Son Minhyun / Minhyun Shon (in Switzerland)