When Kirito took on a random quest on the 76th floor to kill time, he didn't expect to be transported to a bedroom and find himself wearing pyjamas. To his surprise, the One Thousand and One Nights quest summons various girls that he is acquainted with, all of whom are tricked into thinking that they have to share a bed with Kirito to complete the quest. The true goal of the quest, however, is for Kirito to survive till morning without getting into bed with them. If he fails, there will be a penalty for the girls...

From Yen Press:

Kazuto Kirigaya (aka Kirito) has survived the death game of Aincrad masterminded by Akihiko Kayaba, programmer of Sword Art Online, and made it back to the real world. Unfortunately, the same cannot be said for Asuna Yuuki (aka Asuna the Flash), the girl Kirito fell in love with in the game world and who has yet to awaken from her seemingly endless slumber. As his sister, Suguha, sadly looks on, Kazuto continues to visit Asuna in the hospital in the hope of finding answers... But one day, the answers suddenly find him in the form of a man who claims to be Asuna's fiancé?! With him, the man brings an in-game screenshot of someone who looks a lot like Asuna being held captive! Now Kirito must dive into an all-new VRMMORPG, ALfheim Online, to bring Asuna home!!

Follows the heroines from the Aincrad arc through their various adventures in the real world at the SAO Survivor School and in the virtual world of ALfheim Online.

Having won a photon sword in a mini game, Yui decided that it would be the perfect gift for Kirito. However, convinced that a present is more impactful when it's delivered as a surprise, Yui enlisted the help of Asuna and the other girls. The girls would face Kirito in battle during a new GGO event and create an opportunity for the perfect surprise: using slime guns to blind him during the fight, thus allowing Yui to present her gift to the unsuspecting Kirito just as he regains his vision. However, Yui did not foresee one thing: that her surprise gift will have to compete in impactfulness with Kirito's mastery at getting himself into all kinds of ecchi situations...

While on their way to Zakkaria from Rulid Village, Eugeo and Kirito encounter a noble girl named Medina battling monsters on the highway. Medina Orthinanos is a noble whose family was banished to the borderlands due to being considered defects by the empress of Norlangarth. Having lost her father in an accident, Medina seeks to become an Integrity Knight to clear her family's besmirched name. Little did she know that the two boys she encountered on the road to Zakkaria shared her goal of becoming Integrity Knights but would one day go up against the Axiom Church and kill the supreme ruler of the church...

A manga adaptation of the Sword Art Online game, Sword Art Online Alicization Lycoris. Lycoris adapts the first half of the Alicization Arc, before diverging from canon with an original storyline starring an original character, Medina Orthinanos. The manga tells the story from the perspective of Eugeo.

This series is a retelling of the SAO Aincrad Arc starting from a day or two before the clearing of the First Floor Boss, and continuing onwards. The first chapter was included in the Anime as Episode 2. Note: Please be advised that the side stories in this series have some changes from the original Light Novel versions of the Sword Art Online main story.

Project Alicization, a top-secret government project run by Rath, a company affiliated with the Japan Self Defense Force (JSDF), was started to create the first highly adaptive, «Bottom-up AI». By using a 4th generation FullDive machine, called the Soul Translator (STL), Rath succeeded in copying the Fluctlights (souls) of twelve newborn babies, creating a «Soul Archetype», a non-developed Artificial Fluctlight that could be copied to create new Artificial Fluctlights, which would then need to be nurtured to mature into an individual. For this reason, a virtual world, codenamed «Underworld», was created using the free kernel version of the Cardinal System, The Seed, and then transferred into the STL mainframe via the Mnemonic Visuals feature of the STL. Underworld is set in a past era, when science and philosophy were just being discovered, but instead of recreating a past era, limited terrain and certain customs were introduced so that the inhabitants of the world would form their own society.

The story follows Karen Kohiruimaki, a 183-centimeter-tall (6-foot-tall) college student who's insecure about her height, and is bad at dealing with people in the real world. She enters the world of Gun Gale Online with her avatar, Ren, who is less than 150 centimeters (5 feet) tall and wears all pink. She meets a beautiful, brown-skinned female player who goes by Pitohui. They hit it off, but one day Pitohui pressures her to participate in "Squad Jam," a team battle royale variation of the Bullet of Bullets tournament.

The Sword Art Online Comic Anthology is a comic anthology of Sword Art Online-themed short, independent manga stories by various illustrators, published under the Dengeki Comics imprint.

A manga adaptation of the popular game, Hollow Realization takes place in the VRMMORPG game Sword Art: Origin and sees Kirito and friends traversing the land of Ainground, a rebuild of Aincrad, when they meet a mysterious NPC girl named Premiere who hasn’t been coded into the game. Vowing to protect her, they search to uncover the truth of her null coding while also contending with players who want to erase her existence from the game.

Adaptation [LN]: Sword Art Online Progressive vol.3
Continuation of Sword Art Online: Progressive manga adaptation after Himura Kiseki left the project.

Adaptation [LN]: Sword Art Online Progressive vol.4
Continuation of Sword Art Online: Progressive - Houei no Barcarole

A long time ago, in a certain world, the evil magician Aval was thoroughly defeated by a brave man Ruldo, who carried "Sword Breaker". Unfortunately, Ruldo was banished by Aval's curse into a different world. Now, will the call for a hero bring Ruldo back into his original world once more?

From Hyper Parfait:

Golden-haired and blue-eyed Heilong is the clan's most powerful and fearsome assasin; however, he left the group with his blind best friend, Pailong. Nowadays, the two of them are doing street dance performances, but the clan continues to hunt for them... to bring Heilong back!

Inside a certain virtual reality game, you can be the head of a medieval army. What adventures and warfare await in this exciting game…!?

The Mystic Lunar Dance Troupe took in Jin Sohan as an orphan, and he spent his childhood with them.

But one day, one of the four great demons, the Venom Demon, discovered that he was special and kidnapped him.

After all kinds of test, he decided to raise him as his disciple.

Ten years later, Jin Sohan tried to look for traces of the Mystic Lunar Dance Troupe, but the Sword Dance Troupe had already been destroyed at the hands of the Unorthodox Faction that’s now ruling over his hometown.

An Adaption of Sword Girls online game