Honestly the best season in SAO, combining everything with the previous seasons and no filler episodes! Super emotional and exhilarating, very well done by Aniplex. Lots of blood and gore but this is definitely worth watching. Weird how Quinella didn't seem half bad anymore in this half although she was the main villain in the first half of alicization but doesn't really matter. Definitely would recommend watching. Unlike Season 1 and 2 where they had the fairy tale arc which felt super cheesy and filler IMO, this is full of jam packed action with plot lines within the Underworld and outside of it too,