FGO NA: Battle in New York 2021 - Finale - The Eternal City (Budget Beni-Enma Set-Up)

A little weird to wrap your head around, but not too bad. It’s a weird sort of damage race, but Romulus’ buffs to your party are weirdly potent, so you can deal some hefty damage if you time your attacks right.
This was only my second real attempt at this fight, so it shouldn’t give you too much trouble.