The official website of Overlord released a new preview and visual for the TV anime’s upcoming second season. Overlord 2 is slated to premiere January 9, 2018 in Japan. Madhouse is returning to animate the series.
— オーバーロード／TVアニメ公式 (@over_lord_anime) December 17, 2017
Anime News Network Encyclopedia‘s description of the series:
In the year 2138, virtual reality gaming is booming. Yggdrasil, a popular online game is quietly shut down one day. However, one player named Momonga decides to not log out. Momonga is then transformed into the image of a skeleton as “the most powerful wizard.” The world continues to change, with non-player characters (NPCs) beginning to feel emotion. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game has become.
OxT will be performing the opening theme while MYTH&ROID will perform the ending theme.