I don't know for sure since I haven't read it. But there's likely to be the swordsman as a main character.
There could be a young hero who discovers the existence of the jade sword and sets out on a journey to find it. Along the way, he or she might meet a wise old mentor who guides them. And of course, there would likely be a powerful villain who will stop at nothing to get the sword for himself. There may also be some side characters like the hero's friends or the villain's minions.
I don't know since I haven't read it. But it could be a young hero who is destined to find the jade sword.
I'm not entirely sure as I haven't read it in detail. But generally, it might be about the adventures of a swordsman, perhaps his journey to become stronger, his battles against various foes, and the mysteries he uncovers in a fantasy world.
I'm not sure specifically as I haven't read this particular light novel in detail. But usually in a light novel about immortals, there might be characters who are on a journey to gain immortality or those who already are immortals and have some special powers.
There is a wizard who is also an important character. He often helps the main swordsman with his magic powers, especially in difficult battles. And there is a female character, who is strong - willed and a great fighter herself. She has her own goals and sometimes clashes with the main character but also becomes his ally at crucial times.
The main character is a boy named Elin. He is brave and curious, and his ability to communicate with the wind sets him apart. Alongside him is Alden, an old and experienced wizard. Alden has a vast knowledge of magic and the history of the world in the novel. And then there's Lyra. She is not only an archer but also has a kind heart. Her friendship with Elin is an important part of the story as they face various challenges together.
The main characters might include a young adventurer who discovers the Sword of Oratoria and sets out on a journey. There could also be an older mentor - like figure who guides the protagonist. And perhaps a villain or antagonist who wants the sword for their own evil purposes.
I'm not entirely sure who the main characters are specifically as I haven't read it in great detail. But usually in such light novels, there is a protagonist who is often the one most involved with the Amber Sword, whether it's a young adventurer or a person with a special destiny.
Since I don't know the exact 'Seven Sword Light Novel', it's hard to say. But usually in such stories, there could be a young hero who discovers the first sword and starts the journey. There might also be an old mentor - type character who knows about the swords' history.
I don't know as I haven't read this novel.