First half was good, the GGO Arc, after it felt like filler episodes in aincrad, although they met 1 key character which helped develop some story in the end. It always seems to work this way for SAO, season 1 and 2 have a good arc then the aincrad parts seem like filler, but that's just my opinion. blah blah blah blah blah. filler episodes were mostly background or diving in deep about Asuna's family life and etc. idk what else to write AAaaaaaahhhhhhhhh f good plot in the first half, couldn't stop binge watching lightsaber photon swords were kinda cheesy tho ngl