How would the story progress after Naruto leaves Rias in the fanfiction?

The dynamic within Rias' peerage would be greatly affected. There would be a power vacuum as Naruto is likely a strong member. His departure might cause some members to question Rias' leadership. Maybe they start to worry that if she couldn't keep Naruto, who else might leave? Also, in battles, they would have to find new strategies without Naruto's unique abilities.

After the proposal, they would probably start preparing for their wedding. Ino would be very involved in the planning, choosing the perfect flowers and dress. Naruto would be more focused on making sure all their friends are invited. Their friends would also be excited, and some might even offer to help with the preparations.

They would likely start with some mutual curiosity. Naruto would be intrigued by Rias's devilish appearance and powers, while Rias would be interested in Naruto's ninja abilities. They might exchange stories about their respective worlds, with Naruto talking about his village and his friends, and Rias sharing about the devil society. Interaction could also involve sparring sessions to test each other's strength.

In a Naruto x Ino after - war fanfiction, the story might progress as they both heal from the traumas of the war. Ino could be involved in helping Naruto deal with his nightmares, using her knowledge of the mind. Meanwhile, Naruto could inspire Ino to be more confident in her abilities outside of her family's traditional role. They could attend village festivals together, and slowly, their friendship would turn into love. They would also face some obstacles, like the opinions of their friends or their own insecurities, but they would overcome them as they grow closer.

The story could progress in many ways. For one, Sasuke might be filled with guilt for receiving Naruto's eyes. This guilt could drive him to become a better person and fight for the things Naruto believes in. He may also use the new vision to uncover secrets or powers that were previously hidden. On the other hand, Naruto, without his eyes, could develop other enhanced senses or abilities, and together they could form a new kind of partnership. They could also face challenges from those who oppose the idea of Naruto sacrificing so much for Sasuke.

The story could develop with Issei forming his own group. He might gather other characters who also feel left out or have similar goals. This new group could then become a rival to Rias' peerage, leading to interesting battles and power plays.

If Issei leaves Rias, the power dynamics in the story would shift drastically. Rias's peerage would be weakened without Issei's strength. Also, Issei would have to find his own place in the devil world. He might explore other areas of the supernatural and form new relationships.

The characters close to Rias might be relieved. If they see Naruto as an outsider or a potential threat, his leaving would be a good thing for them. They would probably go back to their normal routines without Naruto's presence causing any disruptions. For example, some of Rias's devil comrades who are more traditional might not like Naruto's different ways and values.

The story could progress with Naruto facing new and more powerful enemies. Since he has merged with Yami Naruto, his power level has increased, and this would attract stronger foes. He might also go on a journey to better understand and control his new powers.

The story could progress with Naruto having to deal with the challenges of his new form. Maybe he has to find a way to reverse the transformation, so he goes on a quest to find a cure. Along the way, he meets old friends and new characters who either help or hinder him.