The main character could be an original character with a special doujutsu. For the harem part, characters like Sakura, Hinata, and Ino could be part of it. Sakura with her strong medical and combat skills, Hinata with her gentle yet powerful Byakugan abilities, and Ino with her mind - control jutsu would make for an interesting dynamic around the main character with the doujutsu.
It could be a long - lost relative of one of the Uchiha clan members who has a new type of doujutsu. And the harem might consist of female characters such as Temari from Suna. She is strong - willed and has powerful wind - based jutsu. Tenten, who is skilled with all kinds of weapons, could also be in the harem. And of course, Karin with her unique abilities related to sensing and healing chakra would be an interesting addition to the group surrounding the main character.
Obviously Naruto would be one of the main characters. And then there could be female Pokemon like Pikachu's female form (if we consider that in the fanfic), and female trainers such as a character inspired by Dawn from the Pokemon series. They would be the main parts of the harem, attracted to Naruto in different ways.
One option for the main character is an OC (original character) who has the spirit of Naruto inside him but looks like Link. He has the determination of Naruto and the adventuring skills of Link. In the harem, we could have Ino from Naruto. She's confident and has her mind - related jutsus. And from Zelda, Midna could be a part of it. She is a complex and powerful character. Another character could be Hinata. Her shy yet strong nature would add an interesting dynamic to the harem.
In this type of fanfic, Naruto is the central figure. From KHR, Gokudera would be a likely candidate for the harem. His loyalty and fiery personality would make for an exciting relationship with Naruto. Bianchi could also be part of it. Her cooking skills and her feelings for Gokudera could add an extra layer of drama. And Fon, with his calm and powerful presence, would be an important character interacting with Naruto in the harem - centered story.
Perhaps the story could be about a ninja who inherits a powerful doujutsu that has some sort of connection to the female characters in Naruto. As he tries to master this doujutsu, these female characters are drawn to him. They end up training together, and during their training, they discover secrets about the doujutsu and their own pasts. This could lead to a series of exciting adventures and the development of deep relationships among them.
For sure Naruto is a main character. In the My Little Pony side, Fluttershy could be in the harem. Her gentle nature might be drawn to Naruto's kind heart beneath his tough ninja exterior. Pinkie Pie could also be a main character in this fanfic. Her fun - loving and energetic personality might make her interested in Naruto, and she would bring a lot of humor to the harem situation.
Felicity Smoak could be one of the main female characters. Her intelligence and tech - savvy nature could be an interesting contrast to Naruto's ninja skills. She might be intrigued by Naruto's different way of thinking and his unique abilities.
Obviously, Kurenai herself could be a central character in the harem. Also, Anko could be a potential member as she is associated with Kurenai and has her own unique personality. Hinata might also be involved as she has a crush on Naruto and could be drawn into this situation due to her connection with Naruto and the overall Naruto - Kurenai scenario.
Naruto is a must. Kaguya, as a key part of the Naruto lore, would be in it. In terms of the harem, Ino could be one of the characters. She has always had an interest in Naruto to some extent. Tenten could also be part of it, perhaps drawn to Naruto's new Saiyan - like strength. And from the Saiyan side, Raditz could be introduced, creating some conflict as he initially tries to take advantage of Naruto's Saiyan powers but later might become an ally. There could also be some original characters created just for this fanfic.
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.
Well, obviously Naruto and Konan are the main ones. But other characters like Sakura could be part of it. Sakura, being a strong - willed and skilled kunoichi, might be attracted to Naruto's growth and his new - found status in the ninja world. Hinata could also be included. Her long - standing love for Naruto could easily fit into the harem concept, and she could interact with Konan in an interesting way.