"Оверлорд" is a popular Japanese light novel series written by Kugane Maruyama. It follows the story of Satoru Suzuki, a salaryman who finds himself trapped in a virtual reality game as his character, Ainz Ooal Gown, a powerful undead overlord. The series explores themes of power, morality, and the complexities of leadership in a fantasy world. The light novel has been adapted into a successful anime series and manga, gaining a large fanbase worldwide. It features a rich cast of characters, including Albedo, a loyal guardian, and Shalltear Bloodfallen, a vampire warrior, who contribute to the intricate plot and world-building.