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AP–20678★ 6.3
// About this anime
The Testament of Sister New Devil is also listed as Shinmai Maou no Testament on some trackers — same show, different title convention. It's a TV series across 12 episodes out of Production IMS. The run is complete — no gaps waiting on new episodes.
Genre-wise it's tagged Action, Ecchi, and Fantasy, which is the throughline if you're browsing by mood rather than by name. Looking for something similar? Attack on Titan is the nearest match on the shelf right now.