Attack on Titan: No Regrets

Attack on Titan: No Regrets was produced by Wit Studio, a subsidiary of Production I.G, as a two-part original video animation series released in 2014 and 2015. Adapted from the spin-off manga written by Gun Snark and illustrated by Hikaru Suruga, the narrative serves as a prequel to the main series, detailing the origins and rise of Levi Ackerman within the Survey Corps. The production sought to expand upon the backstory of the franchise's most popular character, offering insight into his transformation from a criminal in the subterranean city to a soldier.

The animation was directed by Tetsuro Araki, who aimed to maintain the high-octane, visceral visual style established in the first season of the main television series. The project was received positively by the franchise's dedicated fanbase, who appreciated the darker, character-focused tone and the deeper exploration of Levi's complex relationship with his comrade Furlan and his mentor Erwin Smith. It is widely considered a successful expansion of the Attack on Titan mythos, reinforcing the show's emphasis on tragedy and moral ambiguity.