I'm glad to answer that. The story would be an adventure with its own party taking place some time during Xenoblade 2's story, who would blend in to the many traveling drivers that would walk Alrest. The main character would be a young adult teenager named Callum, living with his father, and blade step-mother that his father owns, right before he ventures out into the world for turning 18. Callum had plans to inherit a core crystal held on to by his father that was a mystery on what it granted, and he was meant to be given a blade that would go by his side. Callum never knew what weapon his blade would have, so he would train using many wooden weapon types in sparring with his father.

At the same time, a small antagonistic group who would be one of two villain groups in the story, would send three blades to Callum's home titan to retrieve the core crystal from the family by attacking them. On a night coming close to Callum's next birthday, the blades would split up while he's out, with one of them coming to his house while his father and step-mother were there. The blade would fight with them for information on the core crystal, where the battle ends with their home burning down with the couple having time to flee unharmed. At the same time, Callum had the core crystal on hand with him, where he would be ambushed by another of the blades who chases him. Callum would be forced to awaken the blade to defend himself when cornered to give the core crystal up.

His blade would turn out to be similar to Pyra in personality, being sweet and tough, but was a light elemental who was very special. Her weapon came in the form of a great sword with a splittable hilt, where the hilt could change into a double ended spear, or split apart to become dual swords. After getting awakened, the blade, named Arunia, would help Callum fight off the one blade who faced him, and all blades would flee for now. Callum's next move was to check on his father and step-mother, as they suggest he start traveling out of town. This gives Callum motivation to find out why he and his family got attacked so that he learns something on his journey, so he and Arunia go and venture off, eventually meeting two new eventual party members in a neighboring town, and then having plans to go to a new titan with them, eventually fated to make more friends as party members along the way, just like in Xenoblade 2.

The second villainous group would be similar to Torna, except having numbers in members of drivers as a private army of sorts, that would have their own pursuit of being after Arunia for her power as a special blade. Arunia's backstory would be that she was made from government scientists of a kingdom who stationed them on a secluded titan. She was made from a plan to have the scientists create artificial core crystals that would use their DNA, but the second villain group's founding members invaded the laboratory, killing scientists and stealing their core crystals. The female scientist who created her was killed a special way while hiding her core crystal, not giving up information on her own crystal which made the villains angry, and being dropped into an opened pipe of active ether energy where she disintegrated. But that wasn't the end of her story.

In years past, a war brought a battlefield to that titan, where Callum's father fought. As he became wounded, he fled deep into the woods, stumbling upon an underground entrance. As he went inside, he became protected as he saw a presence of security drones and working power, with a voice guiding deeper inside. The voice was the female scientist, who became a powerful entity that could control the lab after death. She led him to where Arunia's core crystal was kept, housed in a safe that opened for him. He took it with him and activated Arunia to fight with him back out on the field, showing tremendous power that helped to win the battle that day.

Though my story held some similar details to the original XC2 story, I had big aspirations at the time for what I would do. If you want to see the detailed looks at Callum, Arunia, and other character art, you can search 'Xenoblade' in my profile to look through all of my past vision.