The singer and the listener

The story of a singer of a K-pop group and a girl who accompanies her best friend to the group's concert.
The gripping love story that blossoms during the fan meeting of this concert and subsequently at the afterparty to which she is invited.
but living far away from each other, the two will end up losing sight of each other. Will they ever see each other again or will the two remember this experience as a sweet and adolescent memory?