"Hey, I know you!" Jungkook said while pointing at Dahyun.

The members of both groups were shocked since they're all aware how shy and careful Jungkook is around new people. He is usually shy with everyone, but he's specially bashful around girls. He literally hides in the back and stand there awkwardly when there are girls near him.

Dahyun is also shock, but happy at the same time since he is her bias wrecker, "Yes sunbaenim, I am a member of a rookie group named twice." She answered, like it is the most obvious thing on earth. 

"No, it's not that. I feel like I've seen you somewhere before." Dahyun's heart started beating rapidly fast, hoping that what he remembers is not an embarrassing moment or a crazy thing she've done in the past.

"Eagle dance! At the church!" Tzuyu answered, feeling proud of herself.

Jungkook just turned his head in disagreement.

After a few minutes of thinking, Jungkook snapped his fingers and suddenly laughed out loud, making all the people present confused, specially Dahyun.

"Last winter you're the one that - HAHAHHAHAHAHA Taehyung hyung's - HAHAHAHA!" Jungkook can't even finish what he is saying since it is too funny for words.

All of them are still confused, except Dahyun. She knows exactly what he's talking about. Oh, it is not a good thing.

*flashback*

Trainee Dahyun was walking on the streets of Gangnam when she saw a life size cardboard of BTS outside a store.