Board Thread:Questions and Answers/@comment-117.201.107.16-20180422144115/@comment-6697950-20180422145619

1. It's a novel, not a manga. There is a manga, but it's just as much of an adaptation as the anime.

2. No. None of the main SAO cast take an active role in AGGO, but Sinon will possibly have a cameo or two. On the other hand, Kirito is only indirectly referenced.