Everyone have a good side they allow other to see and a bad, embarrassing, or socially unacceptable side they absolutely do not want to show anyone. 
Shu Yi, a university student who's studying a bachelor of Fine Art secretly developed a crush with a boy she once talked to on Campus. However, being rather shy and having a reputation of being polite, well-manner girl, she simply cannot break character and confess her love. As such, slowly her unrequited love slowly developed into an obsession.