Attack on Titan: Mikasa's Workout (OAD 3.25)

This is from one of the OADs where Sasha and Jean got an cook-off to see whose got the better, tastier meal for Commander Pyxis. Mikasa herself was working out during her training to fight off the Titans.

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Attack on Titan (Season 1): Young Mikasa

This is from the sixth episode where she overcame her fear of death and stabbed an third slave trader while he began strangling Eren for killing the two slave traders.

A GIF