The Games (Oc x reader)

I haven't figured out everything for this but I've written so much for it now that I want to share it in case someone wants to read it.

Prologue:
Earth has found out they're not alone in the universe. An alien species have contacted Earth, giving them a chance to be protected by the aliens out there that threatens the universe. They inform them that there are in fact thousands of alien species out there.

The alien race, who calls themselves Opsidians, offer Earth a chance at competing in the Games, a televised reality competition game they host. In order to win the protection, Earth will have to send a tribute to the Games.

They know little to nothing about the Games or these alien species. But after consideration, they don't see the harm in sending one. And realise it might be their only chance.