Rukia would probably be both amazed and a bit worried. Amazed at the new power Ichigo has, but worried about how it might change him. Chad would see it as a natural progression of Ichigo's power and be supportive. Orihime might be a bit scared at first, but then she would see the good in Ichigo's new form and try to encourage him.
Yes, there are likely fanfictions out there with this concept. The Naruto fandom is vast and creative, and crossovers or unique concepts like Naruto having White Zangetsu are not unheard of. You can start by searching on popular fanfiction websites.
One plotline could be that Naruto finds Zangetsu during a mission in a hidden part of the ninja world. He then has to keep it a secret from his village while he tries to figure out how to use it. Another could be that an enemy uses some sort of dark magic to force Zangetsu onto Naruto, and he has to learn to control it to break free from the enemy's control.
One possible plot could be that Ichigo, after fusing with Zangetsu, gains new and enhanced powers. He might have to face a powerful new enemy that only his fused form can defeat. Maybe he struggles at first to control the combined power, causing some chaos in the Soul Society.
Perhaps in a fanfic, Naruto travels to a different realm where the spirits of Zangetsu and Hyourinmaru exist. He has to pass certain trials and challenges set by the spirits themselves. If he can prove himself worthy, they decide to bond with him and become his weapons. This would involve Naruto showing his courage, determination, and his ability to use their powers for good rather than for selfish reasons.
" Forging Knife " was a 2016 TV series directed by Zeng Hui, with Pu Bajia, Xu Monk, Wang Ou, Zheng Yitong, and Gao Feng as the main actors. The play told the story of the Chinese people rushing to the battlefield, experiencing the test of life and death, and finally reaching maturity and rebirth. The drama was first broadcasted on June 15, 2016 on Hunan TV and then on Central TV Department 8.
Perhaps in this fanfiction, Naruto is given White Zangetsu as a gift from a mysterious figure. With it, he discovers new powers and abilities. He might have to train hard to master it, and in the process, he could face challenges not only from his own world but also from forces that are attracted to the power of White Zangetsu. This could lead to new alliances and enemies for Naruto, completely changing the dynamics of the Naruto universe.
" I Have a Fantasy Phone " and " Douluo's Martial Soul Forge Master " were two novels that could be recommended. Both of them had the male protagonist's ability to forge weapons. In " I Have a Fantasy Phone," the male protagonist transmigrated to another world and obtained the ability to reforge weapons and refine medicine. In "Douluo's Martial Soul Forge Master", the male lead was a blacksmith who forged martial souls. He could forge all kinds of peculiar martial souls. These two novels can satisfy your request for the male lead to forge weapons for free.
The forging process of the Tang sword adopted the forging process of the Han sword's " hundred steel ", and improved the method of dealing with impurities in the steel during forging, and created the " steel " technology. The forging process of the Tang sword first needed to choose high-quality carbon steel as the raw material. During the forging process, one had to pay attention to the purity, hardness, and toughness of the iron ore to ensure that the final Tang Dao was of good quality. During the forging process of the Tang sword, a partial quenching technique was also used. That was, the blade was hard enough to cut through armor, and the blade was tough and durable. In addition, the forging process of the Tang sword also used the technique of burning the blade with earth and covering steel with steel to form a new Chinese sword. The soil-covered burning blade was a kind of partial quenching technique. By controlling the cooling speed of different parts, the blade had different hardness and toughness. In general, the forging process of the Tang sword was complicated and exquisite. It used a variety of advanced techniques, which made the Tang sword have excellent quality and combat performance.
" Notes of Star Casting " was a fantasy novel written by Xiao Zhang in November. It was a novel about swords and magic, and it told the story of the Battle of Quangang and other plots. The novel had several chapters, including chapters 223, 224, and 225. Other than that, there were also novels that were similarly recommended, such as " I am the Dragon King of the Forged Star " and " A Frost Milk Fairy at the Beginning of the Douluo ". If you're interested in " Notes on Foundry Star," you can read its latest chapters on the light novel website.