The trailer for the upcoming Shingeki no Kyojin: Kuinaki Sentaku OVA which was announced in the latest volume of Hajime Isayama’s Shingeki no Kyojin manga has been uploaded. There are two OVAs of Shingeki no Kyojin: Kuinaki Sentaku will be bundled in the 15th and 16th volumes of Isayama’s main manga.

Shingeki no Kyojin: Kuinaki Sentaku is a manga series written by Gan Sunaaku and illustrated by Hikaru Suruga. The series began serialization in Kodansha’s Aria magazine last September. The first compiled volume has released this June with the second releasing on October 28. The manga follows the two strongest men in the series, Levi and Erwin, in their early days as they rise up the ranks and stay alive. The OVA will feature the return of the voice cast from the 2013 TV anime, as well as the staff members: Tetsuro Araki returns to direct and Wit Studio will animate.

Here is a key visual of the spin-off manga:

The two Shingeki no Kyojin: Kuinaki Sentaku OVAs will release as a bundle with the 15th and 16th volumes of the Shingeki no Kyojin manga, which will release on December 9 this year and April 9 next year, respectively.

Shingeki no Kyojin: Kuinaki Sentaku synopsis from Haruhichan:

The young Erwin Smith is a rising star in the Survey Corps, humanity’s only hope of defeating the man-eating monsters known as Titans. Ruthless and dispassionate, Erwin’s mind is devoted to strategies and intrigue. But beneath Erwin’s feet is another world, the “Underground,” where humans are born and die surrounded by the garbage the Capital throws away. Here, the criminal Levi survives on his wits and agility. But when these two ambitious men cross paths, who will prove himself stronger? The long-awaited origin story of Levi and Erwin, two of Attack on Titan’s most beloved characters!