Ep. 16: Touma defeats Biagio to stop the Queen Fleet's self-destruction spell in London.
Lucia and Amakusa Catholics delay battle nuns while Touma, Index, and Orsola advance toward the flagship. Touma battles ice golems and confronts Biagio, who uses magic to enlarge crosses and manipulate gravity. Orsola locates Agnese, but Biagio captures them, revealing his plan to use the Queen Fleet to destroy Academy City. Touma intervenes, knocking Biagio down. As the flagship begins to sink, Biagio triggers a self-destruction spell. Touma orders Orsola to escape with Agnese while he engages Biagio again, ultimately defeating him and halting the explosion. Waking in a hospital, Touma receives a call from Heaven Canceller regarding his return to Academy City and Mikoto's bet. In London, Kaori greets Orsola and Agnese after Tsuchimikado updates her. Meanwhile, a pierced-faced nun from God's Right Seat compels the Pope to order an investigation into Touma, with instructions to eliminate him if deemed an enemy.
Episodes
- Ep. 12 · Touma and allies race to School District 23 airport to stop Oriana and Lidvia from activating the Croce di Pietro at sundown.
- Ep. 13 · Oriana battles Touma while Lidvia attempts to activate the Apostolic Cross from outside the city.
- Ep. 14 · Touma and Index travel to Chioggia, Italy, where they encounter Orsola and face assassination attempts.
- Ep. 15 · Touma and allies rescue captured friends from the Queen's Fleet commanded by Bishop Biagio.
- Ep. 16 · Touma defeats Biagio to stop the Queen Fleet's self-destruction spell in London.
- Ep. 17 · Autumn arrives at Academy City as characters shift to winter attire and new living arrangements begin.
- Ep. 18 · Characters navigate daily life and search for Last Order in London and Academy City.
- Ep. 19 · Amata Kihara investigates the consequences of Gabriel's possession in Russia.
- Ep. 20 · Accelerator evades capture while Touma and Last Order face Vento's deadly attacks.