Dear Diary,

Today, I just moved into my new apartment. Next door, to the left, is a girl named Kwon Yuri and her friend, Im  Yoona. They seem nice. On the right side is someone I have yet to meet. I wonder who he is. Yuri and Yoona told me that his name is Jongin, and he's very mysterious and handsome...

Hyoyeon keeps a diary with her at all times. Sometimes, she writes about the birds. Sometimes, she writes about her job. Sometimes, she writes about her two new friends, Yuri and Yoona. Most of the times, she writes about Jongin.