She was living in a paper plane that relies on the direction of the breeze. She goes to where it takes her, she flies even when feeling blue. 

The other she neither speak nor look. Is she mute, terribly frightened or just plainly hanging in the air?

He laughs when he's not sure and he doesn't even make an effort in anything that he does. All he knows is living upside-down, his feet stuck to the clouds.

The other he can't comprehend the " I don't know anymore " & " stop this "  coming forth from his first love. He lives by the expectations of a long-awaited sunny day.

Starring

Yoon Bomi, Son Naeun

&

Kim Jongdae, Park Jinyoung, Byun Baekhyun