"So, do you guys visit Sungyeol's parents as much as you visit us?" Of course, that should be a question Myungsoo can answer confidently, with a resound 'yes'. Except he can't because he has never visited Sungyeol's childhood house and he doesn't know why. Sungyeol has always been a little secretive about his childhood. But one day, Myungsoo sees an old photo of Sungyeol. 

So you accidentally took the wrong bag and inside you find...  Sungyeol accidentally took another person's bag after a little mishap at the airport and now he wonders who carries a book about ducks while travelling.

Dongwoo's been talking to his penpal, Sungyeol, for so long he can't remember what it was like not to read and write to him every other day. 

Sungyeol finds a book in the library with smudges down the side and he's tempted to call for god knows what reason.    

Dongwoo and Sungyeol are on a long bus ride together ^^