A fanfic writer could make it believable by giving Boruto a strong motivation. For example, if Akatsuki somehow manages to kidnap his friends or family and he has to join them to ensure their safety. Another way is to show that Boruto is being misled. Maybe Akatsuki presents themselves as a group with a noble cause at first, and Boruto, being young and naive, falls for it. This would make his joining seem more plausible.
To make Boruto's joining of Akatsuki believable in a fanfic, the writer could explore Boruto's character flaws. He might be overconfident or too eager to prove himself. Akatsuki could take advantage of these flaws. For instance, they could offer him power or a chance to be part of something 'greater' which he wrongly interprets as a positive thing. Also, the writer could set up a complex backstory where Boruto has some unresolved issues with the village or his family, and Akatsuki seems like an alternative solution to his problems.
Naruto's Akatsuki organization was a secret organization. The order in which its members joined was not publicly disclosed. However, based on some historical events and plot clues, we can roughly guess the order in which the members of the organization joined: [1. Payne (Payne Dao): He was one of the founders of the Xiao Organization and the first leader of the organization.] He was a ninja who used to be a ninja from Kiba Village. Later, he created the Akatsuki Organization and began to implement his plan. 2 Orochimaru (Orochimaru·Dao): He was one of the founders of the Akatsuki organization and the first leader of the Akatsuki organization. He was a ninja who used to be a ninja from Kinoha Village. Later, he created the Orochimaru technique and joined the Akatsuki organization. 3 Scorpion (Scorpion·Dao): He was one of the founders of the organization and the first leader of the organization. He was a ninja who used to be a ninja from Kiba Village. Later, he created the "Poison Technique" and joined the Akatsuki organization. [4 Flying Duan (Flying Duan·Dao): He was one of the founders of the Xiao Organization and the first leader of the Xiao Organization.] He was a ninja who used to be a ninja from Kiba Village. He later created the Flying Blade and joined the Akatsuki organization. 5 Jiao Du (Jiao Du·Dao): He was one of the founders of the Xiao organization and the first leader of the Xiao organization. He was a ninja who used to be a ninja from Kinoha Village. He later created the "Blade of Kakudo" and joined the Akatsuki organization. 6 Dedale (Dedale Dao): He was one of the founders of the Xiao Organization and the first leader of the organization. He was a ninja who used to be a ninja from Kiba Village. Later, he created the "Explosion Technique" and joined the Akatsuki organization. 7 Erastes (Erastes·Dao): He was one of the founders of the Akatsuki organization and the first leader of the Akatsuki organization. He was a ninja who used to be a ninja from Kinoha Village. Later, he created the "Uchiha Clan's Ninjutsu" and joined the Akatsuki organization. The above is just some speculation. The actual situation may be different.
The Akatsuki organization in Naruto was a fictional organization, and there was no real historical basis for the order in which its members joined. However, based on the characteristics of the members of the organization and the mission description, one could roughly infer the order of their joining: [1] Payne (Payyou): Payne was the founder of the Xiao Organization and the first leader of the organization. It was originally formed by some rebels of the wooden leaf village, but it gradually developed into a powerful terrorist organization. 2 Nagato (Long Night): Nagato was Payne's disciple and the second leader of the Akatsuki organization. The genius ninja known as "Hellgate Spiral Maru" had once fought a famous ninja war with Selaiya. 3. Kakudo (Hoodlum): Kakudo was originally a ninja from Kiba Village and later joined the Akatsuki organization. He was an outstanding ninja who was good at using all kinds of weapons and ninjutsu. 4 Absolute (Flying): The second leader of the Absolute Akatsuki organization, Payne's right-hand man was a ninja with the ability of Amaterasu. 5 Dedale (Scorpion): Dedale is a genius ninja who is good at making all kinds of explosives and traps. After he joined the organization, he was mainly responsible for creating various terrorist attacks. 6 Minami (Kankuro): Minami is a ninja from Kiba Village and the third leader of the Akatsuki organization. He was an outstanding medical ninja who was good at treating all kinds of wounds and diseases. 7. Father Scorpion (Chiyo): Father Scorpion is the former leader of the Akatsuki organization. He was once the disciple of Granny Chiyo and was also an outstanding ninja. Because he often worked with Scorpion, he was called Chiyo. It should be noted that the above is only a rough example of the order of joining the Akatsuki organization based on the characteristics of the members and the mission description. The actual order of joining may vary according to the needs of the plot.
It could be a resurrected Orochimaru. He has always had an interest in power and the Akatsuki. He might return, more powerful than ever, and take control of the Akatsuki in the Boruto era, using them to carry out his evil plans, like creating an army of super - ninjas using some dark jutsu.
Well, if Boruto joins Akatsuki in a fanfic, it would be a huge shock to the Naruto universe. Boruto is from a new generation and Akatsuki was the main antagonist group in Naruto's time. He might bring new skills and a different perspective to the Akatsuki. Maybe he could try to change the Akatsuki from within, or he might be forced to do their bidding against his will at first. It could lead to some really interesting storylines, like how the existing Akatsuki members would react to this new young recruit.
Another concept is the Akatsuki's relationship with the new generation in Boruto. They might try to recruit some of the young and powerful ninjas. This could lead to a conflict within the new generation, as some might be tempted by the Akatsuki's power and ideals, while others firmly oppose them.
The Akatsuki members themselves would have mixed reactions. Some, like Itachi (if he were still alive in the fanfic), might see Naruto as a potential asset but also a threat to their long - term goals. Kisame might be amused by Naruto's presence and see him as a new source of entertainment. Meanwhile, the Leaf Village elders would be outraged. They would see Naruto as a traitor and start devising plans to either bring him back or eliminate him.
There are some new developments regarding the Akatsuki in the Boruto manga. For example, their influence might be felt in unexpected ways or new members could be introduced.
😋I have a few books that I can recommend to you to satisfy your needs! The book,"The Title System of Wooden Leaf", allows you to understand the growth of the mastermind behind the Akatsuki organization, Ghost Lantern Masayoshi, as well as how he founded the Akatsuki organization, became the mastermind behind the scenes, and researched the art of immortality. The book "Revenge against Uchiha Weasel from the night of the extermination" was more focused on the revenge story of the eight-tailed human pillar, Uchiha Weasel, and the establishment of the Akatsuki organization was also part of it. These two books were both derivative doujinshi novels that provided different perspectives and imagination. In addition,"The Destruction of the Wood Leaf: The Hegemony of Payne" was also a very creative novel. The main character was Nagato of the Akatsuki organization, describing how he used his own power to dominate the world. I hope you like this fairy's recommendation. Muah ~😗
One possible plot twist could be that Naruto joins Akatsuki to secretly undermine it from within. He might pretend to go along with their evil plans, but in reality, he's gathering intelligence for the Hidden Leaf. For example, he could be the one to discover the true identity of the leader of Akatsuki before anyone else in the Leaf Village. This would add a layer of mystery and suspense to the story.
"I recommend the novel Naruto: Defying the Heavens and Changing Fate to you. In the novel, Naruto became the son of prophecy and resolutely changed his original thoughts. With the help of Nine Tails, he defeated Tanzo, subdued Orochimaru, and broke the fate of death with his companions. This novel has a rich plot and is worth reading. I hope you like this fairy's recommendation. Muah ~😗