"Where is he?"
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Taeyong is a part time postman and Jaehyun is a teen boy waiting for a letter from someone important to him.
The two boys meet unexpectedly and ends up being friends, little did Taeyong know that it would grow into something more.
One day when Jaehyun's letter has finally arrived, Jaehyun wasn't at the post office as usual. What happened to him?