AN: Hello there everyone! This is my first fic so don't expect anything like regular updates or perfect grammar and language (I Don't speak English as my main language).

As for the story itself it will take place after SAO Fatal Bullet and at the start of Sword Art Online 23: Unital Ring II, so SPOILER ALERT IF YOU HAVEN'T READ THE LIGHT NOVEL

Halo will be an in universe game based on the seed nexus (if u watched or read SAO u surely know what i am talking about), other than the whole SAO cast i will add my OC, Six and Kureha from the SAO fatal bullet game.

Without further ado let's dive into the story! I hope this story will be of your liking!

DISCLAIMER: i don't own Halo or Sword Art Online all rights are of Microsoft, 343 industries and Reki Kawahara Kadokawa and Dengeki Bunko

Chapter 1: Worlds Collide

/STORY START/

On september 25th 2026 Halo Infinite made its debut in the VRMMO genre after being adapted and ported to the Seed Nexus as it was expected in it's 10 year roadmap after the enormous success of other Seed based games like Gun Gale Online and Alfheim Online.

The VRMMO as a video game genre had quite the worst headstart after the SAO accident trapping 10000 players inside a death game that lasted 2 years with thousands of casualties in the first year of the game.

This accident delayed the development and subsequent launch of infinite for full dive gear to a to be announced date, as the main game was released less than a year before the release of Sword Art Online.

Now on the nineteenth anniversary of the famed and loved Halo 3, Halo Infinite was making its debut in the VR space.

Six had always been a fan of Halo since the first time he played Halo Combat Evolved in 2010 at the age of 4, he and Kureha had known each other since the age of 5 and since then had played games together.

When Kureha first invited Six to play GGO also known as Gun Gale Online he was quite skeptical about Full Dive games as a whole, reason being the SAO accident, but when he tried it he quickly fell in love with it.

And now after 5 years from its original release his favorite game Halo Infinite was coming to Full dive.

He and his girlfriend Momiji also known as Kueha in the VRMMO space were ready to dive in and explore Zeta Halo for the first time in VR at midnight of september 25.

At first the game looked like the original campaign except that now the whole ring was accessible and that the campaign was turned into a spartan adventure to be played with your own custom spartan that was able to be converted from the base non VR game retaining all it's cosmetic items.

One of the new features was the option to take off the mjolnir armor and experience the ring as a normal person having your own avatar exported from previous seed games, naturally Six and Kureha choose to export both, they had their GGO avatars and their own armors from the base game.

Six was wearing his Mark VII armor core equipping the iconic Mark VI helmet with the CNM[5]/BNR/FASCINATOR helmet attachment, UA/Agathius shoulder pads, myesel ammo puche as hip attachment, Tac Mk 88 combat knife on as chest attachment, Vandal visor and the Banished Deception armor coating

Kureha armor was also a Mark VII, it was equipped with the Cavallino Helmet with the Purrfect Audio helmet attachment (halo infinite cat ears), UA/Agathius shoulder pads,

Vandal visor and Faded Blush armor coating.

Their spartans were 10 cm higher with their mjolnir on, Six stood at 190 and Kureha at 174 cm.

The first day on zeta halo was a dream coming true, the first thing they did after converting their avatars was collecting and wearing their armor, then they moved on to secure the first FOB on the ring, the in game lore Visual Intelligence System Reconnecense or VISR for short was the perfect take on a User Interface for a Seed game, it was simple clean and intuitive, the pop up windows were just like the one from GGO but with an halo take, the TAC map was able to be projected on the ground for grupe consulting and now spartans personal AIs could interact with the player and provide strategic and tactical support to the player but could also be used to have some funny chats.

At 4:50 on sunday, September 27th, 2026, Six and Kureha were enjoying the view from FOB Charlie when suddenly the ground started shaking, the marines in the fob where disoriented and the 2 spartans were confused, ''Is this meant to be part of the game?'' said Kureha with a perplexed tone, ''I have no idea of what this is but I don't think this is part of the campaign'' replied Six.

After something that could be described as a bright flash in their vision Kureha noticed that the holes in the damaged part of the ring form which you could see space where showing what looked like a big forest underneath them, she freezed for an instant ''we are falling toward what look like to be a forest!'' she gasped, ''how is it possible zeta halo is supposed to be in space!'' six replied, ''i know!'' said kureha.

Meanwhile Sinon was farming rare metals from enemy robots in GGO, when after a bright flash she found herself in a town she'd never seen before.

Sinon had traveled the whole map of GGO from end to end but she didn't recognise this place.

The buildings were made of stone not the industrial looking concrete of GGO, the road was made of cracked bricks rather than asphalt, all around her she noticed GGO players being teleported near her all of whom looked confused like her, but she didn't know a single one of them.

Sinon did not appreciate being surrounded by unfamiliar mens so she decided to get inside a building, clutching her sniper rifle Hecate II she listened to the voices of the players outside as they began discussing about the situation, she then heard someone saying that there was a difference in the UI and that they tried to contact the dev team with no response.

That left logging out as the only way to collect more information, Sinon really wanted to log out but an ominous feeling kept her online.

She heard the players deciding to log out,but when she looked outside the window she saw around 10 avatars in the familiar stand by pose of ALO and GGO.

She soon saw shadows and noticed strange insectoid monsters making their way towards the group of logged out players, Sinon quickly realized that once logged out the player's avatar would just stay in a stand by pose and not disappear like the VRMMOs she was used to.

Fearing for the safety of the players, Sinon aimed her Hecate at one of the insects and fired one bullet completely destroying the head of the monster.

One detail she noticed was that one of the key features of GGO the bullet circle was not present, ''a bug?, no maybe a system error'' she thought.

Having killed the strange insects, Sinon decided to get out of the building to check the player's avatars, she tried to wave a hand in front of the eyes of everyone confirming her doubt. They actually logged off.

It was quiet, too quiet for Sinon's liking, all of a sudden she heard a loud roar from the sky and quickly switched to her mp7 for a more cqc defense fearing some more weird monsters would attack her, but when she looked to the sky she saw an enormous ring, losing pieces that it was falling in her direction.

That ring was Zeta Halo, and the world where everyone was inside of was the new game that absorbed all the Seed Nexus VRMMOs, Unital Ring.

/CHAPTER ENDS/

To be continued in chapter 2: Familiar faces

AN: this was the first chapter, i hope you like it, feel free to post a review and ask anything I will reply as soon as i can!

SixSpartan singing out.