Responses
Yoona and the main character are siblings, I am not sure if su ryeon is the one misunderstanding the situation because yoona calls the MC oppa or if she did introduce the mc to su ryeon as her ex. I think the girl Se mi is ryeon little sister and also the writer of the book that was adapted into the drama the mc first saw su ryeon in

Im so confused. So the MC is a writer (probably?) and he used to date the girl Yoona who is now dating the blonde guy who is sisters with the purple hair girl?
Or is Yoona MC's sister because it showed earlier that they visited some older people who I assumed is their parents???
What??