Who could be the main antagonist in a 'Naruto banished Temari' fanfiction?

A power - hungry politician from one of their villages could be the main antagonist. This person might see Naruto and Temari's relationship (if that's part of the reason they are hiding) as a threat to his plans for power. He wants to use their situation to his advantage, either by forcing them to do his bidding or by getting rid of them altogether.

It could be Danzo. He has always been a shadowy figure with his own agenda. He might see Naruto as a threat to his control over the village and engineer his banishment.

It could be a powerful Thalmor agent. The Thalmor are often seen as the bad guys in Skyrim, and if Naruto shows up, they might see him as a threat to their plans of domination. They could use their influence to get Naruto banished and then try to hunt him down.

The main antagonist could be a powerful Sith - like figure who has infiltrated the ninja world. This character might be manipulating events from the shadows, causing the village to suspect Naruto and leading to his banishment. They could have their own motives for wanting to take over the ninja world, like using its chakra for their own dark purposes.

Maybe the main antagonist is a group within Naruto's own village. The elders or some of the more conservative clans who banished Naruto in the first place. They fear that if Naruto returns as the banished emperor, he will change the power structure that they have been maintaining for so long. So they do everything they can to stop him from coming back, even if it means allying with outside forces.

A powerful Hollow could be the main antagonist. This Hollow could sense Naruto's unique energy and see him as a threat to its plans of taking over Karakura. It might constantly target Naruto and his new friends, trying to eliminate them one by one.

It could be a rogue ninja from a neighboring village who wants to obtain Naruto's Rinnegan for himself. This ninja has been secretly observing Naruto and sees the potential of the Rinnegan. He then tries to hunt Naruto down during his banishment to take the power.

Maybe the main antagonist is a powerful figure within Konoha who doesn't want Naruto to leave and become an independent force. He secretly sends assassins after Naruto. When Temari gets involved, this figure also targets her. His actions are driven by his thirst for power and fear of Naruto's potential outside of Konoha's control.

It could be Danzo. He has always been suspicious of Naruto and might see this as an opportunity to get rid of him for good. He could spread false information to make the village turn against Naruto after the Pein attack.

The main antagonist could be one of the village elders. They might see Naruto's fox - summoning abilities as too dangerous and banish him out of fear. Throughout the fanfiction, they could try to prevent Naruto from coming back to the village, fearing that he'll seek revenge or disrupt the power balance they've established.