From the Diary of Son Chaeyoung

Chaeyoung is a loner because she assumed that no one would want to be her friend after she recovered from the city, went back to her hometown, and made the decision to switch schools. However, it turns out that she unknowingly attracting all of the student's attention due to her remarkable features.

Additionally, Chaeyoung maintains a diary in which she virtually daily records her thoughts and feelings, confides all of her secrets, and occasionally even discusses her crush, Somi.

What if she suddenly loses track of the diary and the following day it is handed back to her by Mina? That would be the worst case scenario.

Mina Myoui is the queen bee on campus!