Board Thread:Questions and Answers/@comment-30882723-20161229174036/@comment-9595671-20161229180848

I can't answer all your questions, but I can answer your fourth question atleast.

It was just the 200 years after Volume 18 had ended, this is the reason he still remembers Alice and Eugeo. Otherwise when he met Alice's android body in the real world, he would have had no idea who she was.