While the long wait for the return of "Attack on Titan" is nearly over, it comes with some disappointing news: The second season will feature just 12 episodes, less than half the number in the first.

The information arrives courtesy of the anime's offical Twitter account, which revealed the Season Two will be released on DVD and Blu-ray in two volumes, each containing six episodes. Some fans responded with dissatisfaction to this revelation, with many tweets expressing frustration with having waited nearly four years for the second season, only to get fewer episodes.

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Based on Hajime Isayama's bestselling manga of the same name, "Attack on Titan" is set in a world where what remains of humanity lives in cities surrounded by enormous walls designed to keep out the gigantic, flesh-eating monsters known as Titans. The series follows Eren Yeager, his adopted sister Mikasa Ackerman, their friend Armin Arlert and numerous other characters as they attempt to defend their world and learn more about the Titans. While the anime has been slow to produce episodes, there are already 21 volumes of the manga published, with more than 63 million copies in print worldwide. Kodansha USA publishes the series in North America.

The manga has grown incredibly popular since its debut in 2009, with the franchise now including video games, spinoff novels, a parody manga and anime, and a live-action film adaptation; there's even an "Attack on Titan" wine.

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Season Two picks up shortly after the first season, which saw Eren and his friends capturing a Titan that had been hiding within the city. The official synopsis reads:

Eren Jaeger swore to wipe out every last Titan, but in a battle for his life he wound up becoming the thing he hates most. With his new powers, he fights for humanity's freedom facing the monsters that threaten his home. After a bittersweet victory against the Female Titan, Eren finds no time to rest—a horde of Titans is approaching Wall Rose and the battle for humanity continues!

"Attack on Titan" Season Two began airing on Saturday. The series will be available for streaming on Funimation and Crunchyroll at the same time as it airs in Japan.

(via Anime News Network)