Sword Art Online: Alien War

As soon as Kirito woke up from the downtime, something unexpected happened - was the terrifying humanoid creature that suddenly appeared serious? ? When did Underworld actually have combat power of the level of Ozma of Chaos? All decent people were pulled into the rift of time and space, and the uncle in samurai uniform told them that if they want to stop the blood curse, they must go back in time and kill Ozma completely. Going back to the past means... Aincrad? Ghost! This is not the Aincrad I know! There is indeed a Town of Beginning, but why is it called the Elvin Defense Line next to it? Are you kidding me when you see a tower reaching the sky as soon as you reach the second floor? Kirito realizes that things are not simple and turns around to release Phantom Sword Dance. Ps: 1. Original protagonist. Should I first create a book to occupy a place to record inspiration, or should I write an old book first? 2. There are especially many secondary designs.