A Choice with No Regrets: Part Two

A Choice with no Regrets (Part 2) ( 悔いなき選 Kuinaki Sentaku ) is an OVA, episode 0.5B, of the Attack on Titan anime. It was produced by Wit Studio and Production I.G.

Overview
Levi and his friends Farlan and Isabel have joined the Survey Corps and are assigned to Flagon's squad, much to the latter's displease. As the Survey Corps begin preparations for the 23rd Expedition beyond the Walls, the former thugs plan to kill Erwin Smith and steal the documents during the expedition. Levi initially hesitates, worrying for his friends' safety, but they convince him to trust them and they join the expedition. The trio demonstrate their abilities in 3D Maneuver Gear and quickly kill some Titans. That day, the Survey Corps are caught in a heavy rain, and Levi takes advantage of this and leaves his friends to murder Erwin on his own. However, the soldiers are attacked by Deviant Titan which kills Farlan and Isabel. After Levi kills the Titan, Erwin reveals he knew all along of the true intentions of the trio, and encourages Levi to not regret his decisions. Levi then decides to keep following him.

Summary
The leaders of the Survey Corps discuss Erwin's proposal to accept Levi, Farlan and Isabel into their ranks. Squad Leader Flagon opposses to it, believing that accepting thugs will taint the morale of the soldiers, but Erwins points their skills in Three Dimensional Maneuver Gear. As they comment on Erwin's plan to avoid the Titans instead of battling them and thus reduce the soldiers' casualities, Commander Keith Shadis accepts the trio into the Survey Corps.

The next day, they are introduced to the other soldiers and assigned to Flagon's squad, much to his displease. He leads them to their rooms, with Isabel being sent against her will to a separate section for women. Levi's "clean freak" behavior almost makes him to have a fight with Flagon when he finds the room dirty, but is stopped by Farlan.

As Flagon leaves, it is revealed that the mysterious man had already warned them that the Survey Corps were after them, and their capture was a facade to infiltrate the military.

Keith informs Erwin that the expedition budget was suddenly approved after a long hold, since the leader of the faction which was opposing to it, Nicholas Lobov (who turns out to be the same mysterious man that Levi and his friends are working for), changed his mind, and suspects that Erwin had something to do.

Erwin reveals that Lobov has dealings with the Lang Company, which was planning to redirect the funds of the expedition to the Military Police, and that he has evidence of that. It is revealed also that Lobov's orders to Levi and his friends are to steal that evidence and kill Erwin. Keith warns Erwin of the danger but he replies that the expeditions must continue at any cost for the future of humanity. As he leaves, he crosses paths with Levi, and the latter comments to himself that he will be the one to kill him.

Levi and Isabel are then seen training and showing their abilities in 3D Maneuver Gear and riding, respectively, despite none of them having formal education in those matters, leaving even Flagon impressed; though he complains on Levi's weird style at holding the blades, while Hange Zoë is excited by his originality.

Farlan infiltrates Erwin's office in search for the documents but is forced to leave at Erwin's arrival. He then joins Levi and Isabel and they conclude that Erwin should be carrying the documents with him, and plan to steal them and kill him during the expedition, when he will be focused on the Titans. Levi accepts but decides to do the job on his own and orders his friends not to join the expedition, concerned for their safety since none of them has faced the Titans before.

However, they refuse to come back to the underground, preferring to stay in the freedom of the surface even if that means risk their lives, and after Farlan asks Levi to believe in them, he agrees.