Ngl, it took me until I started watching episode 2 until I realized each episode was a fan fiction that the FL had written about her and the ML.
This is a drama about a fan, Kim Yeojoo who is a fan of an idol called Lee Wondoo. She takes inspiration for her stories from thing she experiences in her everyday life/rather whatever Ediya coffee product she is enjoying at that moment. This all starts out because the idol likes the brand. In her fan fictions she is always the female protagonist that her idol saves and/or is interested in. Or I guess you can say it's y/n type of fan fics because she publishes them for others to read and enjoy too. The storylines are as follows:
Ep.1- High school encounter
Ep.2- Strangers
Ep.3- CEO and applicant who have a history
Ep.4- A college senior and junior who are secretly dating
Ep.5- 500 day couple
Ep.6- Barista coworkers encounter

It's a cute lil story