Prologue: Sword Art Prime

Asuna Yuuki, known as Asuna in the game, one of the survivors in the incident of the death game, Sword Art Online. Trapped in the game for past two years, if you die in the game, you die in real life, until they clear the game to the top 100th floor. She was desperate to survived the game and kill monsters with her incredible rate and level up, even when she risked her life to do. Her skills with her rapier which earned her a nickname, the Lightning Flash.

Her lover Kirito husband-in-game and nickname the Black Swordsman cleared the death game by defeating Heathcliff, the leader of the Knights of the Blood Oath, revealed to be Akihiko Kayaba, the one reponsible for the death game to start by trapping 10,000 players. 4,000 players died and 6,000 survived. She took a hit by shielding Heathcliff's attack for Kirito, and turned out they were alive in the real world.

After SAO was cleared, Asuna and 3,000 players couldn't woke up in the real world. They were captured and diverted in Alfheim Online by Sugou Nobuyuki, Asuna's fiancie to her father discussed. During Oberon (Sugou's avatar) visted, to her horror, his experiments on SAO survivors under his control to their mind and emotion. Asuna managed to escape the cage she was trapped in by the codes Oberon entering keypad beside the door, she found the lab where SAO survivors' brains to be experimented. Asuna was about to log out, but only to be caught and returned back to her prison, before she was back to her prison, she steals an administer card.

Awaiting Kirito to rescue her, he and Yui arrived to the cage and the three of them were reunited. Suddenly, Yui dissapeared and the two of them pressed down to the ground by the Gravity Magic, cast by Oberon. He chained Asuna and began sexually in front of the helpless Kirito, however, Kirito stands himself up and accessing Heathcliff by defeating Oberon and released Asuna. Kirito logged Asuna off safety to the real world. In her hospital room, she quietly waiting for Kazuto, he finally arrived and they share a passionate kiss.

Four months after rescuing Asuna, they played Alfhiem Online, where the New Aincrad became one of the realms in ALO game. When she met Yuuki (Yuuki Konno), which they called her the Absolute Sword that she defeated many players including Kirito as Zekken, only for Asuna stood up by dueling Yuuki.

Yuuki impressing and asked Asuna to helped out to defeat 27th floor boss with her guild Sleeping Knights, which she agreed. They on their way to the 27th floor to defeat the boss and they succeeded.

Yuuki suddenly crying, calling Asuna a sister again before logging out without a word. Three days later, Asuna found Yuuki at Yokohama Kohoku General Hospital where she was treated by the virus she had. Yuuki was happy that Asuna found her, she dreamed of going to school.

The two of them spent more time together in the real world and virtual world, until one day, Asuna received the message from Doctor Kurahashi that Yuuki's condition getting worse. She rushed over to the hospital to Yuuki, while holding her hand, Asuna realized Yuuki wanted to return to the virtual world. Asuna followed Yuuki by using Amusphere in the other room.

In floor 24th, Asuna met Yuuki at the island where they first met. Yuuki created a scroll for her Original Skill, Mother's Rosario skill to passed it down to Asuna. Yuuki's last moments in Asuna's arms with her guild and the thousand players around her.

In the year of 2026, the Augma is released as an alternate system to AmuSphere, in the game "Ordinal Scale" where the players fought bosses and earned a rank by numbers.

An announcement about old SAO bosses in Ordinal Scale which they fought to earn 10,000 points to their rank.

Until the night, Klein and his guild ambushed by Eiji, known as Nautlius in SAO game, who couldn't face off his fear by avoiding all the battles. And making Klein losing his memories of SAO and the other night, Asuna is hit by SAO boss from floor 90th by shielding Silica (Keiko Ayano) who was pushed by Eiji. Asuna realized her memories of SAO are fading and Kirito desperate to get her memories back.

Days later, OS players arrived in Yuna's concert, Kirito came face to face to Eiji and duels with him to return Asuna's memories back. Kirito wins but turned out they were to revived Yuuna as an AI by taking SAO survivor's memories, only to damaging their brains and killing them like the NerveGear in SAO.

A horde of Aincrad bosses raid the area, Yuna tells Kirito that the Augma has a hidden full-drive feature so he can defeat 100th floor's boss in the top of Aincrad and defeat SAO bosses. Entering the 100th floor in Ruby Palace, Kirito, Lisbeth, Silica, Agil, and Sinon confront the boss. Until they were defeated easily, only for Asuna, Klein, Leafa and the others arrived in the battle and defeat the boss.

Kirito returns to the arena who was now in 1st rank and defeated SAO boses. Yuna restores Asuna and SAO survivors' memories back and fades since she was coded from 100th floor.

As promised, Kazuto and Asuna went to the hill to watched the shooting stars like they discussed in the night on Aincrad during their time in SAO.

Ten days after, Kazuto and Asuna went out dating and they went to the park. They watched the little kids playing at the playground, going on the slide or the swing.

At the tree, the mysterious figure watching Kazuto and Asuna together sitting on the chair, it laid eyes on Asuna before turning, dissapearing into thin air. That caused Asuna's eye caught on the light, but only to found nothing. She thought someone was watching her.

"Asuna?" Kazuto's voice brought her back to senses. "What's wrong?" Kazuto asked.

Asuna shook her head, gave him a small smile, "It's nothing." She said quickly.

Kazuto raised his eyebrow a little, but decided to drop it. Asuna looked back at the tree where the person was watching her, wondering who that person is and why they were watching her.

Back in Asuna's house, the mysterious figure appeared on her room and placed the box on her desk with folding paper on top of it. It backed away from the desk and disappeared again, going back to its world.

Kazuto and Asuna began dating for hours until it's afternoon and they went home. He dropped off Asuna as she waved goodbye to Kazuto after he drives away, Asuna went back inside her house.

Asuna went upstairs to her room, as she got there. She noticed the box on her desk with her name on it, she went to her desk and opened the paper up. The words written in the paper said, 'This is your first quest'

Asuna was confused by this, did someone send her a new game? She placed the paper beside the box and opened it, revealing the game inside, Sword Art Prime. "Sword Art Prime?" she mumbled softly. Asuna wondered if her friends had one as well the same as her.

Asuna looked back at the paper the words in then at the game, before she put the game in and placed AmuSphere on and said, "Link start!"

The screen turns different colors when she entered a game, but she didn't know the light was consuming around her and disappeared. She was transported into the another world where the war they been fighting.