Bloody Valkyrie Incident

The Bloody Valkyrie Incident was a battle between Ainz Ooal Gown and a brainwashed Shalltear Bloodfallen.

Background
Ainz Ooal Gown seeking to collect more information of the world that the Great Tomb of Nazarick now finds itself in, sent out the members of the Pleiades: Sebas Tian and Solution Epsilon. To achieve this, Sebas and Solution infiltrate E-Rantel under the guises as members of a noble family; Sebas Tian acting as a devout butler and Solution as a spoiled heiress from the Baharuth Empire. Making their reputations known in the fortress city, they solicit a driver, Zach, to take them to the Royal Capital. Zach is, in fact, an informant for a group of a brigand, Death Spreading Brigade, who plan to ambush the wealthy duo when they are outside the confines of the city. Unbeknownst to them, Shalltear Bloodfallen and two of her Vampire Brides are also traveling with Sebas Tian and the Pleiades' member. Unlike the duo's information gathering assignment, Ainz had assigned Shalltear to seek out Martial Arts users and humans that would not be missed. Having already anticipated Zach and the ambush, Shalltear, and her minions make short work of the bandits. Shalltear they separate from Sebas Tian and Solution to carry out her mission, first by locating Death Spreading Brigade's base of operation.

Incident
Entering the nearby forest Shalltear and her vampire brides eventually come across Death Spreading Brigade's hideout. Approaching the base, they are hindered by a few obstacles, one of her vampire brides having been caught in a bear trap. Shalltear annoyed at the failings of her subordinate quickly orders them to engage in a frontal assault.