Ainz and Albedo find Shalltear and Ainz states that even though Shalltear is under mind control, she was left behind without any orders. Ainz attempts to use a Super Tier magic item to free her, but it fails. Because of this, Ainz realizes that Shalltear has been mind controlled by a World Class Item, the strongest of all types of items. He decides to equip the Floor Guardians with the World Class Items that Nazarick has to protect them before he goes to fight Shalltear; but he also states that Shalltear is one of the Strongest NPCs in Nazarick and that he might not be able to beat her.