Maybe Rock Lee could be an important character. He could come to the orphanage to help with the physical training of the orphans. He would be a great inspiration for them with his hard - working attitude. Also, Neji could be involved. He could use his Byakugan to keep an eye on the orphanage and make sure there are no threats approaching.
In addition to Naruto and Tenten, Shikamaru could play a role. He could be the one who helps with the strategic planning for the orphanage, like how to manage resources and deal with any political issues in the village regarding the orphanage. And Sakura could be the orphanage's medic, taking care of any injuries or illnesses the orphans might have.
Well, in a 'naruto and tenten family fanfiction', their children would play a big role. Let's say they have a son and a daughter. The son is very much into his father Naruto's Rasengan technique and is constantly trying to improve it. The daughter, on the other hand, is more interested in her mother Tenten's ranged weapon attacks. There could also be a neighbor, an elderly ninja who has a lot of stories to tell. This neighbor could be a source of wisdom for the family, especially for the children as they grow up and face different challenges in the ninja world.
In a 'naruto and tenten orphanage fanfiction', it could be that the orphanage is already existing but in a bad state. Naruto and Tenten volunteer there. Naruto uses his shadow clones to help with the heavy lifting and cleaning, while Tenten uses her connections to get better supplies. They start to form strong bonds with the orphans, and Naruto might even teach them some of his signature jutsu, like the Rasengan in a safe and controlled way. The story could also involve the orphans facing some challenges from outside the orphanage, like bullies, and Naruto and Tenten protecting them.
Obviously, Naruto and Tenten are the main characters. Naruto, the energetic and powerful ninja, and Tenten, the skilled weapon - using kunoichi.
Obviously, it's Tenten and Naruto. Tenten, with her skills and no - nonsense attitude, and Naruto, the energetic and sometimes mischievous ninja - in - training. Their interactions would be the focus of the fanfic, with Tenten trying to manage Naruto's behavior and Naruto likely trying to have as much fun as possible.
It could be Orochimaru. He might be interested in Tenten's unique weapon skills and Naruto's power of the Nine - Tails. He could try to capture them to conduct experiments on how to combine their powers for his own gain. He might create some sort of hybrid - clone with Tenten's weapon - using abilities and Naruto's chakra.
Naruto might be really confused at first. He's used to people being friendly or having normal crushes, but a yandere is a whole different level. He'd probably try to talk to her and understand why she's acting so strangely.
Maybe Rock Lee. He has always been very passionate and his positive energy could have attracted Tenten. Their friendship might have blossomed into a romantic relationship, resulting in her pregnancy.
One possible antagonist could be some of the traditionalist ninja in the village who oppose the marriage. They might think that Naruto, as a jinchuriki, is not a suitable match for Tenten. They could try to sabotage their relationship by spreading false rumors or creating difficult situations for them during their missions.
Their relationship could start with mutual respect. Naruto respects Tenten's dedication to her weapon - based ninjutsu, and Tenten respects Naruto's strength and determination. They might start training together more often, which would lead to them spending a lot of time together. This time together would allow them to open up to each other about their pasts, their fears, and their hopes for the future. As they grow closer, they would start to develop feelings for each other, and these feelings would eventually lead to their marriage.
It could be rogue ninja from a hidden village. They might be after Tenten because she has some sort of valuable information or a powerful weapon in her possession. Naruto gets in their way to protect her, and these rogue ninja use their forbidden jutsus to overpower Naruto.