Board Thread:Questions and Answers/@comment-10184949-20130529153511/@comment-3551173-20130612231710

Well some people mark the changing of seasons with the changing of OP and ED songs, like with long term animes, also if you break the anime's into arcs. Aincrad consists of a major plot with two minor arcs in-between (Murder in the Area and Yui Arc), and self-contained stories in the other non-major plot, this is how it is different from most LN anime adaptations IMO. For Alfheim plotline it could be divided into two parts like the LN. Still I was lazy in my explanation and I'm sorry Gytis.

I was just explaining of when you look  up SAO season 2 you might find them saying the the Fairy Dance was the second season of SAO.