The August issue of Kodansha's Aria magazine announced on Saturday that four Attack on Titan manga will have compiled book volumes ship in Japan on August 8. The fourth volume of Saki Nakagawa's Attack on Titan: Junior High (Shingeki! Kyojin Chūgakkō) manga, first volume of hounori's four-panel Spoof on Titan (Sungeki no Kyojin) manga, third volume of Satoshi Shiki and Ryō Suzukaze's Attack on Titan: Before the Fall (Shingeki no Kyojin: Before the Fall) manga, and second volume of Hikaru Suruga and Gan Sunaaku's Attack on Titan: No Regrets (Shingeki no Kyojin Gaiden: Kuinaki Sentaku) manga will ship simultaneously as part of the "Shingeki no Kyojin Spin-off Festival: Summer" promotion.

The September issue of the magazine, which ships on July 28, and the second volume of Attack on Titan: No Regrets are also holding a present campaign. Applicants will receive a special Levi Christmas card illustrated by Suruga.

Nakagawa launched the Attack on Titan: Junior High comedy manga in Kodansha's Bessatsu Shonen Magazine in April 2012. The manga re-imagines Eren, Mikasa, Armin, and other cast members from the original manga as students and teachers at Titan Junior High School. Kodansha released the second volume in Japan in August.

DeNA's free Manga Box smartphone and tablet app launched with Hounori's four-panel Spoof on Titan (Sungeki no Kyojin) manga in Japanese, English, and Chinese in December. The spinoff series features Eren, Mikasa, and Levi.

Shiki's ( Daphne in the Brilliant Blue, Kami-Kaze, Riot ) Attack on Titan: Before the Fall manga is based on author Ryō Suzukaze and artist THORES Shibamoto's ( Trinity Blood ) prequel light novel series of the same name. Shiki launched the manga in the October issue of Kodansha's Monthly Shōnen Sirius magazine on August 26. The first of Suzukaze and Shibamoto's light novels shipped in Japan in 2011, and the third novel shipped in June 2012. The story of the light novel series takes place before Hajime Isayama's original manga and follows Anheru, a member of the Survey Corps who works in weapons development.

The Attack on Titan: No Regrets manga launched in the January issue of Aria . The manga focuses on Levi's past, including his first encounter with Commander Erwin and how he entered the Survey Corps. Suruga is drawing the manga, and Sunaaku (Gargantia on the Verdurous Planet) from Nitroplus is in charge of the manga's scripts.

Isayama's original Attack on Titan manga depicts the battles between humans and the giants who now rule the world outside humans' walled enclaves. Isayama launched the series in Bessatsu Shonen Magazine in 2009, and the manga now has 25 million copies in print. Attack on Titan: Junior High, Attack on Titan: Before the Fall, and Attack on Titan: No Regrets received special chapters in Kodansha's Monthly Shonen Sirius magazine in March.

Kodansha Comics publishes the Attack on Titan: Junior High, Attack on Titan: Before the Fall, and Attack on Titan: No Regrets spinoff manga in North America, as well as the original Attack on Titan manga.