"Attack on Titan: Before the Fall" is a prequel manga series set in the same universe as Hajime Isayama's "Attack on Titan," exploring events that occurred approximately 70 years before the main storyline. Written by Ryō Suzukaze and illustrated by Satoshi Shiki, the series delves into the origins of humanity's struggle against the Titans and the development of the Vertical Maneuvering Equipment, a pivotal tool in the fight for survival.

The narrative centers on Angel Aaltonen, a young man born within the confines of Wall Maria, who is imprisoned after being falsely accused of murdering his parents. During his incarceration, Angel is subjected to experimental procedures involving Titan blood, which grant him enhanced physical abilities but also mark him as a target for those who fear his potential. After escaping prison, Angel joins the Survey Corps, a military branch dedicated to combating Titans, where his unique abilities and insights prove invaluable.

Another key figure in the story is Sharle, a noblewoman whose family is involved in the development of the Vertical Maneuvering Equipment. Her determination to contribute to humanity's survival leads her to collaborate with Angel and others to refine the technology, which becomes essential for battling Titans. The series also introduces Kuklo, a young man known as the "Titan's son," who was found as a baby in the stomach of a Titan. Kuklo's existence sparks both fear and fascination, and his journey intertwines with Angel's as they seek to uncover the truth about Titans and humanity's precarious existence.

The plot explores the early days of humanity's conflict with the Titans, focusing on the desperation and ingenuity required to develop tools and strategies for survival. The series highlights the societal divisions within the walls, the fear of the unknown, and the sacrifices made by individuals to protect humanity. Through its characters and events, "Before the Fall" provides a deeper understanding of the world-building and technological advancements that shape the events of the main "Attack on Titan" series. The manga maintains a grounded tone, emphasizing the human struggle against overwhelming odds while expanding on the lore of the franchise.