As If Love Doesn't Exist

Siyeon had the rug pulled out from under her when she realized that everything in her life was a lie—her parents are not her real parents, her fiance not really her fiance, and her cousin Eunhye is actually the birth daughter of this household. Siyeon is resigned to her misfortunes until Eunhye reveals to Siyeon that all of this was planned and orchestrated. Swallowing her tears of anguish, Siyeon makes a fateful wish that brings her 10 years into the past where she may be able to change everything... or can she?

(Source: Webtoon Entertainment)