Who could be the likely royal family to adopt Naruto in a 'Naruto adopted by royalty fanfiction'?

The Hyuga clan could also be a possibility. Given their strong bloodline and their focus on family and tradition, they might adopt Naruto. They could teach him their Gentle Fist technique. And Naruto could use his unique energy and determination to perhaps improve or modify the technique in some way. Plus, he could help the Hyuga clan with any external threats they face due to their valuable Byakugan.

Maybe an old hermit who lives in the mountains outside Konoha adopts Naruto. The hermit could be a master of some long - forgotten ninjutsu. Under his tutelage, Naruto would learn these ancient techniques and use them to protect the land around the hermit's dwelling. He might also gain a deeper understanding of nature and chakra from the hermit.

Iruka Sensei could be a likely candidate. He already has a close bond with Naruto and cares for him deeply. Adopting Naruto would be a natural extension of that relationship, and he could provide Naruto with a stable home life and continue to mentor him in his ninja training.

A strong female ninja from a hidden village that was destroyed. She has a big heart and sees Naruto as a chance to start anew. She can teach Naruto her unique fighting style which is a blend of agility and powerful strikes.

Well, one possible plot could be that Naruto is discovered by a royal family during one of his travels. They see his potential and his kind heart despite his rough upbringing. They adopt him into the royal family. Naruto then has to learn the ways of royalty while also trying to keep his ninja skills and values. He might face jealousy from other royals or threats from outside the kingdom who see him as an outsider in the royal court.

Definitely Naruto and Grayfia. Naruto is the main protagonist who has his own story and growth arc. Grayfia is the one who changes Naruto's life by adopting him. She could be a noble or a powerful mage. There may be other characters such as servants or comrades of Grayfia who are initially skeptical of Naruto but later come to accept him. And of course, there could be antagonists. Maybe there are some rivals in Grayfia's world who don't like the idea of an outsider like Naruto being in their midst and they try to cause trouble for him.

Naruto and Rias are bound to be the central characters. Naruto with his determination and power, and Rias with her leadership and magic. But we can't forget about the other members of Rias' peerage. They might have different reactions to Naruto being adopted. Some could be welcoming, while others might be a bit skeptical at first. And Naruto's own comrades from Konoha might also be relevant, perhaps in flashbacks or if they somehow cross over into Rias' world.

The Raikage, Ay, would also interact with Naruto. He might be hesitant at first about Killer Bee adopting Naruto, worried about potential problems. But as Naruto shows his strength and loyalty, Ay could start to see Naruto as an asset to the village. And of course, Naruto's friends from the Hidden Leaf Village might come to visit or have some sort of communication with him, like Sakura and Shikamaru. They could be worried about Naruto living in a different village but also be proud of his new experiences.

It could be a long - lost heir to a powerful, almost forgotten dynasty who resurfaces. This heir, being royalty, might have some special powers or knowledge. And Naruto, being the hero he is, could be drawn to her because of her unique qualities and the potential she holds for bringing about positive change in the world.

Jiraiya would be the most interesting. He has a wild and carefree personality which could be a great contrast to Naruto's initially lonely and neglected state. Jiraiya is also very knowledgeable about the outside world and has many powerful jutsus, especially those related to the toads. He could take Naruto on adventures, teaching him not just about being a ninja but also about life in general. His connection to the prophecy about the 'Child of Prophecy' could also add an interesting layer to the story, as Naruto might be groomed in a different way to fulfill that prophecy under Jiraiya's guidance.