OVA
Description
Ilse Langar was a member of the Survey Corps who participated in the 34th expedition beyond the Walls, where she served in the left wing of the second brigade. During the return leg of that expedition, her squad was decimated by a Titan attack, leaving her as the sole survivor. Her horse was killed, and her vertical maneuvering equipment was damaged beyond use, forcing her to flee north on foot toward Wall Maria, knowing that her chances of survival were slim. Despite this desperate situation, she carried a notebook in which she recorded her observations, hoping that even if she did not survive, her notes might prove useful to humanity.

Physically, Ilse stood 160 centimeters tall and had short black hair parted to the right side, lightly tanned skin, gold-colored eyes, and a distinctive patch of freckles below each eye. Her appearance bore a notable resemblance to another character named Ymir, a fact that would prove significant during her final encounter.

Ilse's personality was defined by a complex mixture of bravery and deep emotion. She appeared to be a devoted and intelligent soldier who took great pride in her membership in the Survey Corps, viewing herself as part of humanity's wing and resolving to fight to the end regardless of the circumstances. Even while in grave danger, she thought of others, and in her final moments she expressed profound regret at being unable to give anything back to her parents. She was also highly curious, a trait that manifested in her meticulous documentation habits and her willingness to attempt communication with a Titan rather than simply fleeing. However, she was not immune to fear or rage, and under extreme duress she could lose her composure, as seen when she screamed curses at the Titan she encountered.

The defining event of Ilse's life, and the reason she is remembered, occurred in the forest where she sought refuge. After running extensively, she inadvertently came upon a six-meter-class Abnormal Titan. Instead of immediately attacking and devouring her, the Titan behaved in a manner completely contrary to everything the Survey Corps believed about Titans. It hesitated, bowed reverently, and spoke human words: Subject of Ymir and Lady Ymir, well met. Recognizing the extraordinary nature of this moment, Ilse began documenting the encounter in her notebook, attempting to ask the Titan questions about its nature, its origins, and why Titans eat humans. The Titan did not respond coherently, instead moaning in increasing frustration. When Ilse lost her temper and began yelling at the creature, calling it a useless lump of flesh that should disappear from the world, the Titan became agitated, tearing at its own face before seizing and decapitating her. After killing her, the Titan placed her headless body inside a hollow tree rather than consuming it, an act that suggested a degree of ritual or reverence that remained unexplained.

Ilse's notebook survived where she did not. Approximately one year later, while tracking a Titan that was behaving strangely, Hange Zoë and Captain Levi's squad discovered the tree containing Ilse's remains. Levi recognized her armband as belonging to a member of the 34th Expedition, and upon reading the notebook, Hange realized the immense value of what Ilse had recorded. The notebook provided the first documented evidence that Titans could speak and appear to possess a form of consciousness, hierarchy, or historical memory tied to the name Ymir. This discovery directly led to Hange renewing requests for Titan capture experiments, which had been discontinued for fifteen years, and profoundly influenced the Survey Corps' understanding of their enemy. The contents of the notebook also later explained why Captain Levi and Hange reacted with surprise when Mikasa mentioned the name Ymir in their presence.

Ilse's legacy is therefore not one of combat prowess or survival but of documentation and sacrifice. Her official Survey Corps statistics rated her battle skill at six, initiative at seven, strategy at six, teamwork at seven, and curiosity at ten, reflecting that her greatest strength was her investigative drive rather than her martial ability. Her final recorded words, written even as the Titan's teeth closed around her, became information of unfathomable value for humanity's understanding of the Titans. Her possessions and notebook were eventually returned to her parents by Hange, closing a small chapter of personal loss against the larger backdrop of humanity's struggle. In death, she became a symbol of the soldier who fights not only with weapons but with knowledge, ensuring that even a failed encounter can advance the cause of truth.