Yoo Jimin and Kim Minjeong. Who are they? They were Aespa's high school sweetheart. The MY's campus perfect couple. They had known each other and were together for almost a decade, spent their teenage years together and been there for one another until their mid 20s.

However, things has changed as soon as the two of them graduated. Jimin had to take over her family's business, Yoo Corporation. She's known as Karina Yoo in the company and only those who are close to her can call her by her birth name. She was announced as The Yoo's only heiress as soon as she took her position as the new CEO.

Whereas Minjeong, she decided to work with her best friend, Ning Yizhuo. The two of them applied for vacancies based on their qualification at RJ Group. Minjeong scored a position of Finance Director while Ning was hired as Operation Manager.

A lot of people knew about Minjeong's relationship with Jimin even after Jimin gained her title as the most successful young CEO. People were digging out their back story of how did they get together. Some were envied and some were shipping them. 

They were seen as a great couple. No one can deny their strong chemistry together. Even Jimin's parents adore Minjeong ever since Jimin brought her to meet them. Jimin was happy. It was as if nothing could ever tear them apart. She's confident that Minjeong wouldn't leave her side, ever. 

That was until Minjeong dropped a "I want to break up" on a rainy Monday at her office. Jimin was flabbergasted, shocked and thought it was a bad joke but no, Minjeong was so serious. Jimin couldn't believe it. She doesn't understand it a bit. Why? Why did Minjeong want to break up with her?