Sword Art Online. Volume 12. Alicization. Ascent

Finally, Yujiu fulfilled his childhood dream and reunited with Alice. But she no longer has anything of the little girl from the village of Rulid. Alice came for Kirito and Yujiu as criminals who violated the Code of Prohibitions. She... remembers nothing of her childhood and calls herself the knight of unity. They are thrown into the dungeon of the Central Cathedral, a symbol of the Church of Axiom's power, but thanks to Kirito's cleverness, they manage to escape. Then they are helped by a mysterious girl named Cardinal, who knows that Kirito came to this world "from outside." Finally, Kirito and Yujiu set off on a journey to the top of the tower to bring back the former Alice! But strong warriors, born through the synthesis ritual, stand in their way...