this AU takes place during season 5, starting not long before Amending Fences, though in this AU, Amending Fences never happens.

Twilight created the Venom symbiote on accident and upon finding out that it's similar to Nightmare Moon, rejects it. This happens in Canterlot and it seeks refuge at the Canterlot library where it finds another pony who feels rejected by Twilight, Moondancer.

the power of crackshipping compels me. this is an AU of Marvel's Venom and My Little Pony; Friendship is Magic - Moondancer is essentially Eddie's stand in. hence the shipping