"Dear Diary, it's me again. I know I haven't been writing for a while, but there is this boy, and this boy is a good enough reason for me to want to start writing diaries again. In fact, he makes me want to start writing countless diaries with pages filled with his name."

"Sunday, 23rd October. I saw her again today, at the florist's, and it's ironic because she is the fallen leaf among the spring flowers."

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When Luhan first met Kaeul, he was returning her lost cat to her apartment, as per requested by the posters stuck on the neighbourhood bulletin board.

The second time was when he was assigned to be her school guide during the first semester of junior year.

This is a story of how a girl's diary is starting to fill up again, after so many years of being left empty and forgotten, and how a boy slowly picks up the fallen leaves of autumn.