Attack on Titan: No Regrets is a oVA anime that premiered in winter 2015, produced by WIT STUDIO.

About the production: the story comes from a visual novel, there are 2 episodes of about 28 minutes and its current status is "finished".

Its main genres are action, drama and fantasy, with themes such as Military, Male Protagonist, Survival and Gore.

On AniList, Attack on Titan: No Regrets has an average score of 83%, a very good score, and appears on 155,385 users' lists.

The franchise continues in or follows from: Shingeki no Kyojin.

This prequel to megahit Attack on Titan answers the questions: How did Captain Levi of the Survey Corps go from street thug to humanity's strongest soldier? And how did Commander Erwin become a cold, calculating leader, ready to sacrifice anything to save the human race? The fires that forged this bond of loyalty and trust were intense indeed! (Source: Anime News Network, revised)

Official synopsis from AniList.