Sword Art Online 27 (light novel)

After two hundred long years apart, Kirito has finally been reunited with Ronie and Tiese, as well as Alice’s younger sister, Selka! But Kirito’s face is not the one they’re most shocked to see... Commander Eolyne Herlentz of the Integrity Pilothood bears a striking resemblance to Eugeo, a likeness that deals a heavy blow to the hearts of the reawakened women. But before they can process their emotions, the call to arms sounds once more.

Protectors new and old of the Underworld will have to fight side by side to repel this fresh threat! And not to be outdone, the party back in Unital Ring reaches the second tier and launches into their next major encounter!