Ilse's Notebook is the first trilogy of OVAs from the Attack on Titan anime, produced by Wit Studio and Production I.G, and included with a limited edition of Volume 12.
Synopsis
The Scout Corps soldiers are camping in a ruined city outside Wall Rose, while the officers discuss plans to follow, Hange demands Erwin's permission to capture a Titan for experimentation. However, he refuses, arguing that too many lives have already been lost during this mission.
The Sudden Visitor: The Torturous Curse of Youth[]
The Sudden Visitor: The Torturous Curse of Youth is the second OVA included in the special edition of Volume 13.
Synopsis
Make food, not war.
At the hest of a drunk Commander Pyxis, the still-in-training Jean (along with Armin and Annie) and Sasha (along with Conny and Reiner) face off with kitchen knives instead of fists to settle a row over a mishap during practice.
Distress is the third OVA included with the special edition of Volume 14.
Synopsis
When a training exercise goes awry and Christa is taken hostage, Jean and Eren must set aside their differences to track down and take out the perpetrators…without their mobility gear.
No Regrets is the anime adaptation of the Attack on Titan: No Regrets manga that narrates Levi's past, included in volumes 15 and 16.
Synopsis
In the Stohess District, an entrance to a practically secret place is hidden, a gap to a hidden place for the civilization attacked by the titans, but which would serve as a failed place to flee from them. But the truth is that it was not what was expected, a city plagued by rats and diseases, full of homeless people with no place on top of the wall, a deplorable place that was supported by apparently resistant columns, really a deplorable place. But, that was not the scenario for some of them, that "deplorable" place for some was their cradle, a miraculous place where they knew they were safe in a war that was taking place in the upper world. A home, a miraculous foundation to live on, that was the story of Levi Ackerman, Furlan Church, and Isabel Magnolia.
Lost Girls is the second trilogy of OVAs, based on the Attack on Titan: Lost Girls manga that narrates the visual novel "Lost Girls", starring Annie Leonhart, included in volume 24.
Synopsis
It tells the times and spaces between plot points, through the eyes and ears of the toughest, but most taciturn heroines in the saga. What they thought, felt and did on and off the stage came to the fore through a very suitable medium for transmitting interiority: language.
