Well this is awkward. This story is based off of How I Met Your Mother. These are the counter parts of the main characters.

Jung Sooyeon(male) (Jessica)= Ted Mosby (I put this particlar name in bold because Sooyeon is telling the story to his children)

Kim Tae Yeon (male) = Marshall Eriksen

Tiffany Hwang Miyoung (female) = Lilly Aldrin

Sunny Lee Soonkyu (female) = Robin Scherbatsky

Kwon Yuri (male) = Barney Stinson

Supporting Characters :

Choi Sooyoung (male) = Carl (the bartender)

Im Yoona (Female) = Victoria

Undecided Characters

Seohyun

Hyoyeon