Assault on Yokosuka. The Fortress Port of Yokosuka. Legal and free through industry partnerships. Episode 5. The group of privateers known as the Blue Steel continues their mission to deliver blueprints of the Vibration Warhead Torpedo—a weapon that may turn the tides. Availability Information. Anime season charts ... Arpeggio of Blue Steel. Check out the manga for Arpeggio of Blue Steel, now available from Seven Seas Entertainment! Anime. Watch and stream subbed and dubbed episodes of Aoki Hagane no Arpeggio: Ars Nova online on Anime-Planet. Episode 3. Not Human. About the Show. Episode 4.