One common plot point is the element of surprise. Naruto, with his unorthodox ninja skills, surprises Erza's enemies when he comes to her rescue. Also, there could be a plot point where Naruto has to learn about Erza's magic in order to use it to their advantage during the rescue. And sometimes, the fanfiction might explore the emotional side of things, like how Erza feels about being saved by someone from a completely different realm and how Naruto is affected by her gratitude and the new friendship that forms.
A common plot point is Naruto's sudden appearance in Erza's world or vice versa. Maybe there's a magic - chakra mix - up that causes this. Then, there's the actual rescue part where Naruto uses his signature moves like the Summoning Jutsu to get help in saving Erza.
Another plot point is that Naruto's determination and never - give - up attitude play a big role. In these fanfictions, he might face many obstacles while trying to save Yugito, like multiple strong enemies or difficult terrains. But he always perseveres. He might have to fight against some powerful Akatsuki members who have captured Yugito. His ability to quickly analyze the situation and come up with a strategy is also often highlighted in these stories. For example, he could use his knowledge of the Sharingan (if he has some understanding of it from his battles with Sasuke) to predict his enemies' moves and save Yugito at the right moment.
A common plot point is danger. Fem Gaara is often in some sort of life - threatening situation, like being attacked by enemies. Naruto then uses his skills, such as his Rasengan or his ability to make friends out of foes, to save her.
A common plot point is Naruto's unexpected journey to the time when Mito Uzumaki lived. This could be due to a time - travel jutsu gone wrong or a special mission from the future. Another is that Naruto has to face off against enemies that Mito couldn't handle on her own, like powerful ancient demons or rival clans.
In a 'Naruto Saves Ino' fanfiction, a possible plot point is that Ino is about to be sacrificed in a dark ritual by a cult - like group of ninjas. Naruto discovers this and battles his way through the group's defenses. He might also have to use some of his sage mode abilities to overcome the various traps and barriers set up by the cult. Another interesting plot could be that Ino is poisoned, and Naruto has to find an antidote in a limited amount of time. He could enlist the help of Sakura or other medical - nin in the village, but ultimately it's his determination and quick thinking that saves Ino.
In this fanfiction, perhaps the old Team 7 is framed for a crime they didn't commit. Naruto takes it upon himself to clear their names. He starts by investigating the real culprits, which leads him into the underbelly of the ninja world. Along the way, he discovers secrets about the past that could change the way they all view each other. He might find out something about Kakashi's past missions that were related to the current situation. Sasuke and Sakura could be in hiding, but Naruto convinces them to come out and help him prove their innocence. The story could end with Team 7 being exonerated and their reputation restored.
One common plot point could be that the BTS members are in some sort of danger, like being kidnapped by an evil group. Then the reader, who might have some special abilities or knowledge, steps in to rescue them. Another is that there could be a threat to the BTS clan's music career, and the reader uses their wits to solve the problem and save their career. For example, the reader might discover a plot by a rival company to sabotage BTS, and they find a way to expose it.
A common plot point is Tonks arriving just in time. For example, Harry might be surrounded by Death Eaters, and Tonks shows up out of nowhere, using her combat skills and magic to fend them off. Another is Tonks using her Metamorphmagus ability to deceive the enemy. She could transform into a Death Eater to get close to Harry when he's held captive. Also, often Tonks has to overcome some sort of obstacle or enemy plan before she can save Harry, like breaking through a magical barrier that was set up to keep her away from Harry.
One common plot point is that Percy discovers Calypso is in some sort of peril, like being trapped on an island or held captive by a powerful enemy.
Perhaps there is a prophecy that only Naruto and Erza together can fulfill. They start off as strangers but as they journey to fulfill the prophecy, they discover that they have a lot in common. They both have a strong sense of justice and a will to protect their friends. As they face numerous enemies and obstacles, their friendship turns into a deep respect for each other's abilities, and they become a formidable team.
One possible scenario is that Naruto arrives at the Tower of Heaven just in time. Erza could be on the verge of being defeated by a powerful villain. Naruto uses his chakra to boost his speed and punches the villain away. He then quickly takes Erza and flees the tower. Another scenario could be that Naruto has to solve some puzzles or overcome traps in the tower to reach Erza. Once he does, he uses his chakra cloak to protect them both from any incoming attacks as they escape.