The TV animation of "Overlord" (a light novel of Maruyama's golden works) adapted from the madhouse.
The protagonist "Wu", whose game name is "Flying Mouse" (later renamed as Urgun), is the guild leader in Urgun, An Zi, and the ruler of the catacombs in Na Sarric. He didn't log off at the moment when the game was closed. As a result, he crossed another world with the catacombs of Na Sarric and all the NPCs, and became his own game character "King of the Undead", and NPCs also had normal wisdom. He changed the setting of an NPC's "Yalbede" to "love flying squirrels" because he had an itchy feeling before taking clothes. Therefore, after crossing, he has a strong and slightly abnormal love for the protagonist, and therefore he has made many strange moves that stunned Anzi and his companions. Shalltear Bloodfallen, another NPC, is infatuated with flying squirrels, because necrophilia is one of the sex fetishes set by the producer Perokchino, and she is rival in love with Yael Bede, vying for the dominance of Na Sarrik. Because the role of "flying mouse" is a skeleton image, when someone seduces "flying mouse" in animation, he often brushes "no chicken talk" for fun.