Without having read the 'Seven Swords Dominate' light novel, it's difficult to name the main characters precisely. However, in a story like this, the main characters are probably the ones who are either born with a special connection to the seven swords, or they are the ones who discover the swords and take on the responsibility of using their power. They could be warriors, mages, or adventurers who are united by the common goal of using the swords to bring balance or justice to their world.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about the adventures and powers of the seven swords and the characters associated with them.
I'm not sure exactly who the main characters are in 'Seven Swords Visual Novel' as I haven't played it. But they could be the sword - bearers, perhaps with different backgrounds and personalities.
Since it's a Naruto - related fanfic, Naruto is likely to be the central character. As for the others, it could be characters from the Naruto world who have a connection to the seven swords. Maybe some of the ninja from the Hidden Mist village, as the seven swords are associated with them in the original Naruto lore. There might also be new characters created specifically for this fanfic who are related to the swords in some unique way.
There could be a powerful wizard - like character who has the knowledge and skills to navigate through the complex three - realms world. Maybe there's also a young hero with a special gift or destiny. And there might be some antagonist characters who try to stop the main character from achieving his or her goal of dominating the three realms. These antagonists could be powerful lords or demons within the three - realms setting.
In Liang Yusheng's original book, Seven Swords Descending the Sky Mountain, the Seven Swords referred to the seven swordsmen of the Sky Mountain, namely Ling Weifeng, Fei Hongjin, Gui Zhongming, Mao Huanlian, Zhang Huazhao, Wu Qiongyao, and Yi Lanzhu. In the movie version of Seven Swords Descending the Sky Mountain, the seven swords were seven treasured swords. They were Chu Zhaonan's Wandering Dragon Sword, Yang Yuncong's Qinggan Sword, Xin Longzi's Star-competing Sword, Mu Lang's Sun-moon Sword, Fu Qingzhu's Ask Not Sword, Wu Yuanying's Heavenly Waterfall Sword, and Han Zhibang's Sheshen Sword.
In the movie version of Seven Swords Descending the Sky Mountain, the seven swords were Chu Zhaonan's Wandering Dragon Sword, Yang Yuncong's Green Dry Sword, Xin Longzi's Star-competing Sword, Mu Lang's Sun and Moon Sword, Fu Qingzhu's Ask Not Sword, Wu Yuanying's Heavenly Waterfall Sword, and Han Zhibang's She-god Sword.
"Seven Swords" had a movie version and a novel version. The movie version of "Seven Swords" was directed by Xu Ke and starred in many actors. It was released in China on July 29, 2005 and was selected as the opening film of the 62nd Venice Film Festival. It participated in many film awards and was nominated. The global box office was 3.473 million US dollars (the deadline for box office statistics was December 7, 2022). The film told the story of the martial arts legend between the martial arts masters of the former dynasty and the Seven Swords of Tianshan after the Qing Dynasty issued the "martial arts ban." In the novel version of "Seven Swords Descending the Heavenly Mountain", the Seven Swords were originally the Five Swords of the Heavenly Mountain, and later expanded into the Seven Swords. They took the Heavenly Mountain as their home and served justice. The seven swords in the movie version were now seven swords. They were forged by Master Huiming in Tianshan, and each weapon corresponded to each stage of Huiming's life. These seven swords were Chu Zhaonan's Wandering Dragon Sword, Yang Yuncong's Qinggan Sword, Xin Longzi's Star-competing Sword, Mu Lang's Sun-moon Sword, Fu Qingzhu's Ask Not Sword, Wu Yuanying's Heavenly Waterfall Sword, and Han Zhibang's God Shedding Sword. Each sword had its own symbolic meaning, characteristics, appearance, and usage requirements. "The Legend of White Feather: A Long Way to Immortality" was equally exciting. Everyone was welcome to click and read it!
It's hard to say for sure without reading the fanfiction. But it could be Naruto himself as he is the main character in the Naruto series. Maybe Sasuke could also be involved as he often has his own story arcs. And if it's related to the seven deadly sins and swords, there might be new characters created specifically for this fanfiction that represent each sin and are the keepers or former wielders of the sin - swords.
Maybe there's a group of adventurers, each having a special relationship with one of the spellblades. One could be a strong - willed warrior type, another a clever mage, and so on. Without reading the novel, it's hard to say for sure, but these are common archetypes in such stories.
The main character is a young man who embarks on a journey in the world of the 'Trinity Seven Light Novel'. The Trinity Seven, which include characters like Arin Kannazuki, Levi Kazama, and others, are the key female characters. They are all powerful in their own ways. Arin Kannazuki might be charming and have certain unique magical traits, Levi Kazama could be more of a serious and powerful mage. Together with the male lead, they form the core of the story, driving the plot forward with their actions, relationships, and the magic they wield.