There might also be a mentor figure, someone who has taught the ultimate swordsman their skills. This character could be an old and wise ninja with a lot of experience in swordsmanship.
Often in such fanfics, there are friends or comrades of the main character. They could be other ninjas who support the ultimate swordsman in battles, or they might have their own unique abilities that complement the swordsman's skills, for example, a character with healing abilities to keep the swordsman in top shape during long battles.
The main characters in 'naruto the ultimate lover fanfic' could vary greatly. It might be a self - insert character created by the fanfic author who has an ultimate love for Naruto. Or it could be an original character who has a love story with Kakashi. Since it's a fanfic, the author has the freedom to create new relationships and characters, so it could really be anyone within the Naruto universe who is involved in this ultimate love scenario.
Most likely Naruto would be one of the main characters since it's a Naruto fanfic. He is usually the central figure in any Naruto - related story.
It could be Sasuke. Since the fanfic has 'Sharingan' in the title, Sasuke, who is well - known for his Sharingan abilities in the original Naruto series, might be one of the main characters.
Another plotline could be the discovery of a legendary sword in the Naruto world. The story might then revolve around the power struggle to obtain or control this sword among different factions.
Sasuke could be a great main character for a swordsman - themed fanfic. Since he already uses a sword - like weapon, the story could focus on his further development as a swordsman, exploring different sword techniques and their origins.
I don't know the exact main characters without reading it. But it could be a powerful fairy queen or a young and adventurous fairy.
Kakashi could be a potential swordsman character. He's known for his combat skills. In the harem, Hinata could be there. Her gentle nature would contrast with the action-packed world. Also, Ino could be part of it, using her mind - control jutsu in unique ways to protect the group and be involved in the harem's relationships.
Naruto would most likely be one of the main characters. Given the title, there might also be some original vampire characters created specifically for this fanfiction.
Naruto is always popular. His growth and determination are often explored in new ways in fanfics.
Rock Lee could be a main character. His unwavering determination and his unique taijutsu skills could make for some exciting fight scenes against the evil swordsman. And Hinata, with her gentle yet strong nature. She might be the one who discovers some of the swordsman's weaknesses through her observant nature and then shares this information with Naruto and the others.