Attack on Titan (2013)

S1E21 Crushing Blow: The 57th Exterior Scouting Mission (5)

In a final act of desperation, the individual within the Female Titan has broken free from the Recon Corps and transformed back into their human self. Now, masquerading as a member of the Corps and armed with Maneuver Gear, they manage to track down their target — Levi's squad.