Kaire (カイレ) was the user of the World Item, Downfall of Castle and Country, from the Slane Theocracy in the New World. Kaire was an elderly woman wearing a silver-colored traditional Cheongsam embroidered with a golden colored dragon. Almost nothing is known about Kaire personality. However, considering the fact that she belongs to the Slane Theocracy country then it means that she is a religious woman who believes in their creed about the human supremacy and the persecution of other "lesser" races.

Overlord
When a popular fantasy MMORPG shuts down its servers, one guild leader, the skeleton mage, Momonga, finds himself transported to a real fantasy world trapped inside the body of his avatar. His guild’s fortress has been transported to an unfamiliar world and the inhabiting NPC characters gain sentience and look to Momonga as their supreme ruler–an overlord as it were. With his extensive knowledge of magic and powerful, fanatic minions following his every whim, Momonga continues to roleplay the part of the evil overlord to the extent that domination of this new world is not an entirely unappealing option.

Overlord II
Continuing his quest to rule this new world, Ains begins to put the pieces in place for his conquest. But between a Lizard Man tribe uprising, and performing missions as adamantite adventurer Momonga, Ains has his work cut out for him! Thankfully he has his most loyal and willing subordinates to do his bidding.

Overlord III
Following the horrific assault on the Re-Estize capital city, the Guardians of the Great Tomb of Nazarick return home to their master Ainz Ooal Gown. After months of laying the groundwork, they are finally ready to set their plans of world domination into action. As Ainz's war machine gathers strength, the rest of the world keeps moving. The remote Carne Village, which Ainz once saved from certain doom, continues to prosper despite the many threats on its doorstep. And in the northeastern Baharuth Empire, a certain Bloody Emperor sets his sights on the rising power of Nazarick. Blood is shed, heroes fall, and nations rise. Can anyone, or anything, challenge the supreme power of Ainz Ooal Gown?