In the inevitable battle against the "Council of Disciples" of Nebula, the super battleship "Musashi" suddenly appears. In a speech, Shozo wants to force humanity to submit to the principle of the nebula, the "Admiralty Code", otherwise the complete extinction threatens. Gunzo doesn't want to admit that his father is a traitor and sets off in search of Musashi and the mysterious "Yamato", the second super slaughter ship.

Recap of the Aoki Hagane no Arpeggio: Ars Nova TV series, with approximately 40 minutes of new material.