Overlord is a dark fantasy anime based on its Japanese novel
counterpart written by Kugane Maruyama. Season 1 of Overlord was a series of
thirteen episodes that premiered in Summer 2015 and it covers the first three
volumes of the light novels.
Produced by Madhouse and directed by Naoyuki Itou, the anime
adaptation began airing from July 7 to September 29, 2015. The opening theme is
"Clattanoia" by OxT while the ending theme is "L.L.L." by
Myth & Roid.