Sword Art Online: Reactivity Scale

Part 1: The Ruthless Killer.
20 years after the SAO incident began, something far worse has started. Kirito and Asuna remember memories from the fight against Laughing Coffin and Death Gun makes his return in Kirito's dreams. Laughing Coffin's most brutal and vicious member has resurfaced. A new mysterious game has been created by a company called 'Cassals Industries'. Let the reaction begin.

Kirito,
Asuna,
Sinon,
Alice,
Makoto,
LLENN,
Pitohui,
Kikuoka,
Yuri Cassals,
Tooma Salvato,
Plosive,
Victor,
Bermuda,
Deadlock,
Nightstalker.

Part 2: The Real Creator of Death.
After the deadly fight against The Admiral, Suguha and Kikuoka had been killed and Alice badly damaged. Plosive's final words were "He was right, you really would fall for it." After her dismemberment, Kirito, Asuna, Sinon, LLENN, Fukaziroh, Pitohui, M and Nightstalker are going to find the real creator of Apocalyptic Warfare Online and find out it's true intentions. This mission leads them to America, only to see the name of a very familiar but mysterious company and a man Kirito and Asuna know all to well. Can the gamers stop them?

Kirito,
Asuna,
Sinon,
LLENN,
Fukaziroh,
Pitohui,
M,
Nightstalker,
Professor Sugou,
Dr K.

Part 3: The Final Fight.
After Kirito and his crew had defeated Noboyuki Sugou for the final time, only one thing stands in their way: Cassals Industries and their CEO, Dr. K. With the information Noboyuki gave them about what he's doing with the soul translator, this could be the most brutal fight after the War of The Underworld. Could the Underworld still lurk in the soul translator? Or is it just pure Hell?

Kirito,
Asuna,
Sinon,
Makoto,
Pitohui,
LLENN,
Kuradeel,
Moloch,
Dr. K.