안녕 I'm Park Chaeyoung. And THIS is my diary. My life has always been a rollercoaster. I've officially debuted in Blackpink and I'm officially an idol. We turned out to be super popular so my agency told me to keep my identity a secret -- do well in school and keep my head down. A lot of people talk about 'Rosé' from Blackpink which is surprisingly me. One of my biggest fanboys turned out to be the one and only Jeon Jungkook- the boy I really despise, and his stupid group Bts. You now know enough about me - so keep your hands off my book 아니면 널 죽일거야!

An unexpected encounter between a nice guy and a nice girl. Will it turn out nice if the two realize they're roommate?