Unfortunately, I don't know too much about this AU as I've only seen it once.
When you turn a certain age, usually around 18-21, your heart literally stops beating. It is kind of painful and will only restart whenever you meet your soulmate(s).
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AUs & Prompts
RandomMy list of common tropes in stories or fanfictions. AUs, or alternate universes. | | = An AU created by me
