Soulmate AU where people can’t hear the sound of music until they’ve fallen in love. All other sounds can be heard but music cannot.
One day, Person A meets Person B; after multiple encounters with Person B, Person A begins to slowly hear some light noises hear and there. As their relationship (not necessarily romantic yet) with Person B progresses, Person A begins to hear all the sounds they never heard of before–and they love it.
Eventually, Person A can hear the full sound of music.
Bonus: Person A starts dancing to a song while with Person B. Person B stares on confusedly and asks A what they are doing.
“Dancing to this song.”
“What? I don’t hear anything…”
Let Person A’s heart shatter just a little bit.