She is gazing at her sunshine, when the camera pans to her.
She smiles awkwardly as she realizes she was accidentally caught admiring Hoseok as he dances gracefully on stage with his members.
This was not the first time this had occurred to her. However, whenever this occurs, she makes a point of concealing her lovely smile.
Because that smile is reserved exclusively for Hoseok, her ray of sunshine.
The sunshine casts a glance at the screen, and upon seeing her, he smiles. Nobody notices because Jungkook is currently enacting his part.
It's excellent timing.
She is the reason Hoseok is always vibrant.
Manoban, Lalisa.