They were classmate, but not much interacted before. They often had their comeback stage together, but couldn't even say hi to each other.

Until that day, when Dokyeom couldn't hold his body anymore, he showed it to everybody, that she did a good job. Thumbs up for her and thumbs up for him from her. It didn't stop until there, when he walked down the stage and there were a lot of camera, he whispered and said "Congrats, Yuna!" with his full mode smile.