The 19th episode of 86 EIGHTY-SIX will be delayed to December 4 due to “production circumstances,” with a Special Edition episode to air on November 27 instead. This comes after Episode 18 was also delayed by a week for the same reason.
The affected episodes of 86 EIGHTY-SIX belong to its second cour, which premiered on October 2 and is airing as part of the Fall 2021 anime season. The first cour ran from April to June. The anime is based on the ongoing light novel series by Asato Asato.
The main staff includes Toshimasa Ishii (Fate/Grand Order Absolute Demonic Front: Babylonia and Sword Art Online: Alicization – War of Underworld storyboarder) as director, Toshiya Oono (The Promised Neverland, Land of the Lustrous) as series composer, and Tetsuya Kawakami (Interviews With Monster Girls, The Asterisk War) as character designer and chief animation director. A-1 Pictures is the animation production company.
Meanwhile, the cast includes Shouya Chiba as Shinei Nouzen, Ikumi Hasegawa as Vladilena Mirizaré, Seiichirou Yamashita as Raiden Shuga, Natsumi Fujiwara as Theoto Rikka, Saori Hayami as Anju Emma, Sayumi Suzushiro as Kurena Kukumila, and Misaki Kuno as Frederica Rosenfort.
Crunchyroll describes the first cour of 86 EIGHTY-SIX as:
Called “Juggernaut,” these are the unmanned combat drones developed by the Republic of San Magnolia in answer to the attacks by the autonomous unmanned drones of the neighboring Empire of Giad, the “Legion”. But they’re only unmanned in name. In reality, they are piloted by the Eighty-sixers—those considered to be less than human and treated as mere tools. Determined to achieve his own mysterious ends, Shin, the captain of Spearhead Squadron, which is comprised of Eighty-sixers, continues to fight a hopeless war on a battlefield where only death awaits him.
Source: 86 EIGHTY SIX website