Obviously Sailor Moon herself. Her kind - hearted and brave nature would make her a great addition to the harem. And also Sakura from Naruto. She's strong - willed and has a long - standing relationship with Naruto that could develop further in this fanfiction.
Well, you can't forget about Sailor Venus. She's confident and has her own charm. And Tenten from Naruto could also be part of the harem. She's skilled and could have some interesting interactions with the Sailor Scouts and Naruto in this fan - made story.
Maybe a corrupted version of one of the Sailor Scouts. She could be jealous of Naruto's attention towards the other Scouts in the harem. So, she makes a deal with a dark force from Naruto's world, like a powerful Orochimaru - like character. This combined power of dark jutsu and a twisted Sailor power would create a very interesting and complex main antagonist for this crossover fanfiction.
It could be an evil sorcerer who has the power to steal chakra and magical energy. He plans to use this stolen power to reshape both the Naruto and Sailor Moon universes according to his own dark desires. He's able to create powerful illusions that fool even the most experienced ninja and senshi, making him a very difficult enemy to face.
Another theme is friendship and love. The harem aspect usually involves Naruto forming relationships with multiple Sailor Moon characters. These relationships explore different types of love, from platonic to romantic, and also highlight the importance of friendship among the characters as they navigate this new and strange situation together.
A common theme is the clash of different power systems. Naruto has ninja techniques and chakra, while Sailor Moon has the power of the Sailor Scouts. Writers often explore how these powers interact when the characters are in a harem - style relationship. Another theme is the cultural differences between the two universes. Naruto is set in a more feudal - like ninja world, and Sailor Moon has a more modern - day, magical girl setting.
Tuxedo Mask could also be in the harem. He has a long - standing relationship with Usagi, and in a harem scenario, his feelings for her could be even more intense, competing with others for her love.
The main characters are Usagi Tsukino / Sailor Moon, Ami Mizuno / Sailor Mercury, Rei Hino / Sailor Mars, Makoto Kino / Sailor Jupiter, and Minako Aino / Sailor Venus. Also, Tuxedo Mask plays a crucial role.
Sakura could be one of the main female characters. In this fanfiction, she could use her medical skills from the Naruto world to heal the group in the GTA world. Hinata could also be there. Her gentle nature and Byakugan abilities might be useful in detecting enemies or finding hidden treasures. And Tenten, with her weapon - using skills, could be a great asset in any battles or heists they get involved in.
Sakura would definitely be one of the main female characters. She's strong - willed and has a pre - existing relationship with Naruto. Hinata is also a likely candidate as she has always had deep feelings for Naruto. Ino, with her competitive and flirty nature, could also be part of the harem. And Tenten, who is skilled in weapons and could add an interesting dynamic to the group. They all have different personalities that could create various storylines in the high - school harem setting.
Baby Sailor Moon herself is obviously a main character. Then there are usually her friends like Baby Mercury, Baby Mars, etc. The cat guardians, like Luna in her younger form if it's included, can also be main characters. Sometimes, there might be new characters created specifically for the fanfiction, like a baby fairy who helps the baby Sailor Guardians.
The main characters are the Sailor Scouts like Sailor Moon, Sailor Mercury, Sailor Mars, Sailor Jupiter, and Sailor Venus.