Kazuto is later recruited to test an experimental FullDive machine, Soul Translator (STL), which has an interface far more realistic and complex than the previous machine he had played, to help develop an artificial intelligence for the Ministry of Defense (MOD) named A.L.I.C.E. He tests the STL by entering a virtual reality cyberspace created with The Seed package, named UnderWorld (UW). In the UW, the flow of time proceeds a thousand times faster than in the real world, and Kirito's memories of what happens inside are restricted. However, when Black injures Kazuto with suxamethonium chloride, the MOD recovers Kazuto and places him back into the STL to preserve his mind while attempts are made to save him. Meanwhile, it is revealed that UnderWorld was created as part of an experiment to create artificial intelligence that could be used for military purposes.
Action, Fantacy, SF, Future, Love
Sword Art Online Alicization War of Under World