Sword Art Online Volume 17 – Alicization Awakening Chapter 20 - Each of their Battles 24 Those people are all humans from the real world — judging by their accent, they’re Americans! But, why would they be here… This is a genuinely different world, completely cut off from the real world… No. No — Maybe, to the people diving in with STLs, Underworld was actually a different world created through the “Mnemonic Visual” with realism rivaling that of the real world. However, the generic VRMMO template «The Seed» had also been used to design this world. In other words, as long as one used an AmuSphere, they could dive into this world using a low-end server based on polygonal construction — furthermore, the Ocean Turtle had a large, military-grade bandwidth satellite connection. Then, if someone were to write a client program that included Underworld central server address and the accompanying account information, and disseminate it in the real world — Not just several tens of thousands; summoning an army of hundreds of thousands was certainly not impossible. But what shocked Asuna the most was how those crimson soldiers acted; they had started to directly attack their supposed allies, the Dark Land Knights and the Fist Fighter army, without any hesitation. “Wh, what are they…?!” “Aren’t they supposed to be our allies?!!” The Knights screamed desperately while trying to defend against the attack, but their numbers were already far too disproportionate, and on top of that, the crimson soldiers’ weapons and armor were of much higher specs than the Dark Land army’s equipment.