In 2046, many aspects of life are carried out on a virtual network. No matter how advanced the time becomes, however, bullying never disappears. Haruyuki is one of the bullied students. However, one day he is contacted by Kuroyukihime, the most famous person in the school. "Wouldn't you like to 'accelerate' and go further ahead, boy?" Haruyuki is introduced to the "Accel World" and decides to fight as Kuroyukihime's knight.

2021 film directed by Ayako Kōno

A special recap of the first season with an original story in which Kirito and the others decide to go on an underwater mission so that Yui can see a whale, but they face a shocking revelation... Suguha is afraid of water. So Asuna and the other girls decide to teach Suguha how to swim. Meanwhile, Kirito is meeting somebody.

现代社会之中，校园欺凌事件屡禁不止，成为学校和社会的难题。身材肥胖个性内向的有田春雪（梶裕贵 配音）便是长期欺凌的受害者。性格懦弱的春雪无法反抗欺凌者，唯有躲在网络之后，靠玩躲避球游戏来发泄愤怒。一来二去之间，春雪竟然成为了校园内躲避球游戏得分第一位。
有着“黑雪公主”之称的学生会副会长黑雪姬（三泽纱千香 配音）出现在了春日的面前，黑雪姬不仅制止了对于春雪的欺凌，更邀请他进入了名为“Brain Buster”的方程式，在其中，春日化身成为拥有千倍思考速度的超频连线者，被卷入了激烈的战斗之中。黑雪姬召集春日等人的目的只有一个，那就是重组昔日“黑之王”的军团。

A year after escaping Sword Art Online, Kazuto Kirigaya has been settling back into the real world. However, his peace is short-lived as a new incident occurs in a game called Gun Gale Online, where a player by the name of Death Gun appears to be killing people in the real world by shooting them in-game. Approached by officials to assist in investigating the murders, Kazuto assumes his persona of Kirito once again and logs into Gun Gale Online, intent on stopping the killer.

桐人、尤吉欧、爱丽丝。距离两名修剑士和一名整合骑士打败了最高祭司阿多米尼斯多雷特已过去了半年。
结束了战斗，爱丽丝在故乡卢利特村生活。在她的身旁，是失去了挚友，自己也失去了手臂和心的桐人。
献身般支撑着他的爱丽丝，丝毫没有保留像以前一样作为骑士的心。
“告诉我，桐人……我究竟该怎么办？”
然而，通往将Underworld全境引向悲剧的“最终压力测试”的倒计时，却毫不留情地推进着。
仿佛与之相呼应一般，在“黑暗领域”的深处，暗黑神贝库达复活了。他率领暗黑帝国的军队，为了得到“光之巫女”，开始向“人界”进攻。
指挥“人界”军队的贝尔库利等人，决心与“黑暗领域”的军队展开前所未有的大战。
但在他们身旁，并没有发现爱丽丝，以及拯救了“人界”的两位英雄的身影。
《刀剑神域》系列最长、拥有最华丽战斗的“Alicization”篇，其最终章终于揭幕！

The Soul Translator is a interface which interacts with the user's Fluctlight—the technological equivalent of a human soul—and fundamentally differs from the orthodox method of sending signals to the brain. The private institute Rath aims to perfect their creation by enlisting the aid of Kazuto Kirigaya. He works there as a part-time employee to test the system's capabilities in realm generated by the Soul Translator. As per the confidentiality contract, any memories created by the machine in the virtual world are wiped upon returning to the real world. Kazuto can only vaguely recall a single name, Alice, which provokes a sense of unease.

When Kazuto escorts Asuna Yuuki home one evening, they chance upon a familiar foe. Kazuto is mortally wounded in the ensuing fight and loses consciousness. When he comes to, he discovers that he has made a full-dive into the Underworld with seemingly no way to escape. He sets off on a quest, seeking a way back to the physical world once again.

In the year 2022, a massive online role-playing game called Sword Art Online (SAO) is launched. With the aid of "NerveGear" technology, players can control their avatars within the game using nothing but their own thoughts.

Kazuto Kirigaya is among the lucky few who get their hands on the first shipment. He logs in to find himself, with ten-thousand others, in the scenic and elaborate world of Aincrad. However, in a cruel turn of events, the players soon realize they cannot log out; the game's creator has trapped them in his new world until they complete all one hundred levels of the game.

In order to escape Aincrad, Kirito will now have to interact and cooperate with his fellow players. Some are allies, while others are foes. Sword Art Online is not all fun and games: if they die in Aincrad, they die in real life. Kirito must adapt to his new reality, fight for his survival, and hopefully break free from his virtual hell.

2017 film by Tomohiko Itō