Overlord Iv Episode 9 -

We met Nigredo, Albedo’s sister, who showed a surprisingly compassionate side (despite her terrifying appearance).

That red power armor (Azuth Aindra) just completely shifted the stakes. A New Worlder with Yggdrasil tech is a dangerous wild card.

Ainz "mercifully" agrees not to use large-scale magic, opting for a manual ground war instead.

Mithril-level adventurers "Four Armaments" tried their best against a single Death Knight, only to realize the sheer gap in power.

Finally seeing Nigredo (and her lack of skin... yikes) was a great touch from the LNs.