Well, it could be that Naruto is on a special mission in a world that combines elements of his own and Kirito's. He might come across the swords as spoils of war or as a gift from a character who admires his skills. Fanfiction often plays with the idea of different universes colliding, so this scenario isn't too far - fetched.
Kirito did not buy two swords in the second season of the Sword and Sword Art Online. At the end of the first season, Kirito lost his first sword for some reason, but in the subsequent adventures, he obtained more weapons and equipment through interacting with other characters, including a second sword, a third sword, and so on. Therefore, Kirito did not buy two swords in the second season.
One interesting storyline could be a crossover where Naruto and Sakura are transported to the world of Kirito and Asuna. They could team up with Kirito and Asuna to fight against a common enemy that combines the threats from both their worlds, like a powerful demon that has the ability to hack into the virtual world. This would lead to some really cool fight scenes with Naruto's ninjutsu, Sakura's strength, and Kirito and Asuna's sword skills all coming into play.
In a combined fight, Naruto might have an edge in terms of raw power. His Rasengan and other ninjutsu can cause massive destruction. However, Kirito's ability to quickly analyze his opponents and adapt his fighting style in the virtual world is not to be underestimated. Sakura could provide support with her medical skills and also hold her own in combat. Asuna's speed and precision with the sword could also be a game - changer. So, it really depends on how they team up and what strategies they use.
In such a fanfiction, Naruto might obtain all seven swords through a series of epic battles and adventures. Maybe he defeats the previous owners one by one in honorable combat and claims the swords as his trophies. Another possibility is that he stumbles upon a hidden treasure trove where all the swords are stored, and by some twist of fate, he becomes their rightful wielder.
" The Sword of the Heavens " was a novel created by the Stargazing Moon Tower. It told the story of the protagonist shuttling through various original worlds or movies and animations, breaking through the spatial wall and imagining the infinite heavens. The novel has been completed, a total of 327 chapters, can be read on Qidian Chinese website. The novel was set in Wuxia and described the adventures and growth of the protagonist in the heavenly world. It included all kinds of strange Kendo, mysterious sects, powerful enemies, and beautiful women.
The names of all the swords in the Sword Dynasty included: Mohua Sword, Nine Nether King Sword, Crimson Fire Sword, Starfire Comet Tail Sword, White Mountain Black Water Sword, White Jade Long Sword, Great Punishment Sword, Autumn Water Sword, Broken Jade Sword, Wandering Dragon Sword, Ice Soul Cold Light Sword, Azure Frost Sword, Heavenly Sword, Kunwu Sword, Dry Star Sword, Azure Melon Sword, Tai'a Sword, Gongbu Sword, Dragon Spring Sword, Xuanyuan Sword, and Great Ravager.
Kirito could impress Asuna's parents by showing his skills. For instance, if he has some real - world skills like cooking a great meal for them. Also, his intelligence and knowledge, perhaps about technology or history, could make him seem more appealing.