Kirito goes into a coma because of the evil NSA.
The surviving Law guys try to train up a peasant army in preparation for the Chaos invasion (Chaos are led by the literal God of Darkness who is also an evil NSA agent who eats souls like rape).
They get rekt, but Kirito's harem save them with GM accounts and deebeezeee powerlevels.
NSA connect UW to the internet and get 50,000 American players to connect (it was advertized to them as a beta test for a new AO-rated VRMMO where you're allowed to slaughter anything and everything you like, with blood and guts), they mass murder UW residents and think it's hilarious.
To defeat them the main characters get 2,000 Japanese VRMMO players to connect. Despite the difference in numbers the Japanese are superior and win because Asian gamer damashii.
Then PoH (who is also an evil NSA agent) unleashes a zerg rush of Korean and Chinese gamers who were recruited by being told this is the a Korean VRMMO that's in beta test but evil Japanese hackers broke into the server, turned off pain dampening and are torturing their countrymen.
Even when some Japs who speak Korean try to explain the situation to them they don't listen because hurr japanese
The other NSA guys are surprised this works, they thought it wouldn't be worth it because they didn't think Japan is more different from Korea/China than European countries are from each other (hur)
Koreans and Chinese overwhelm Japs because this is every Jap's worst nightmare.
Kirito wakes up (thanks to the literal POWER OF LOVE from his entire harem) and wipes them all out in one attack though.
(Also PoH's motivation is that he's Korean and he hates Japanese so when he got stuck in SAO he decided to set up Laughing Coffin and have them and the clearers kill each other for shits and giggles because Nips killing each other is hilarious.)
Later Kirito and Asuna become gods because of x100000000000 acceleration.
The UWers travel to virtual planets with rocket dragons.