[quote=@AdmrlStalfos19]
So... how much DxD lore would I need to know before I can jump in on this? I ask because it's been a long time since I touched the anime and I may not remember [i]everything[/i] :/
[/quote]

Nothing more than what the wiki can provide, most certainly. As long as you know basic shit about the races and how sacred gears work you'll probably be fine.