Fans are really stoked to know more details about "Overlord" Season 4. The third season of the show wrapped up earlier this month, and fans are now looking forward to the next season. Here is everything we know so far about it.

According to Otakukart, the "Overlord" Season 4 release date might not come as soon as anime fans might hope. At the ending of the third season, Momonga/Ainz Ooal Gown has shown exactly why he is the top of the world by taking on all challengers, but animation studio Madhouse now faces a challenge of their own with producing the fourth season based on the way the story was written.

Does that mean the fourth season of "Overlord" could be delayed until 2021?

The anime's story is based on the "Overlord" light novel series by Japanese author Kugane Maruyama. The story first started life as a web novel back in 2010, but starting in 2012 Kugane teamed up with illustrator so-bin to adapt the story into the light novel format.

Japanese publisher Enterbrain released Overlord Volume 13 in April 2018. The newer light novels followed the web novel pretty closely but then began to diverge significantly starting with Volume 10 (which also just happens to be the starting point for the anime "Overlord" Season 4).

The story also spawned an "Overlord" manga series by writer Satoshi Oshio and illustrator Hugin Miyama.  The official English translation for the manga and light novel series is handled by Yen Press. The English novels are only up to Volume 7, but Volume 8 was released on September 18, 2018, while Volume 9 comes out on January 22, 2019.

The English manga is up to Volume 7 as well, with Volume 8 scheduled for November 13, 2018, and Volume 9 set for February 19, 2019, EconoTimes reports.

Studio Madhouse seems to be sticking to a formula of adapting three books for every "Overlord" anime season. The second season covered the events of volumes 4 through 6 and Episode 12: The Final Battle of the Disturbance was named after a chapter in Volume 6. "Overlord" Season 3 maintained this pacing, but there were some major reordering of events.

As fans can see, the books have a bad habit of portraying events out of chronological order. Some scenes were written from the perspective of one character only to replay these scenes from another perspective in order to reveal new information. Conversely, the writers of studio Madhouse have attempted to show all perspectives simultaneously and keep scenes completely chronological.