You are a transfer student from Indonesia to Japan, because of your father's job, and you happen to be an anime lover and can learn Japanese even if not much

one day you're relaxing in the school garden listening to music on headphones song title: Komang by Raim Laode you start humming and singing a little

then next to you is your senior, then he says

Rin: what are you doing?, listening to the song?, it seems good ..