Cassey likes to write things in her diary. Whats actually written inside her precious diary? 

JaeRin is a normal girl living with a normal family with everything normal. She had never imagine something this ... this out of imaginary, this wonderful, this amazing, this once of a lifetime thing happened on herself. Well its a bit unbelieveable but who knows? There may be these crazy things happen in one's life, of course not everyone will, but who knows? If not it wouldn't be called once in a lifetime right?