Well, it could be that Naruto stumbles upon a strange situation in the fanfiction world where Tenten is in some sort of distress related to the gay fanfiction plot. Maybe he uses his ninja skills to disrupt the flow of the fanfiction and rescue her. He could use his shadow clone jutsu to create distractions and then whisk Tenten away to safety.
I'm not sure who Gi is in this fanfiction as I haven't read it. But it could be an original character created by the author of the fanfiction, perhaps a villain who poses a threat to Tenten.
Well, without reading the 'naruto saves tenten from gi' fanfiction, we can only speculate. It could start with Tenten getting into a situation where she is captured by Gi. Naruto then gets wind of it and sets out on a mission to save her. Along the way, he might face challenges like other enemies or traps set by Gi. When he finally reaches Tenten, he might have an epic battle with Gi. And after rescuing Tenten, they might share a moment of gratitude and friendship, strengthening their bond within the Naruto universe.
It could be a group of outcast ninjas who have a grudge against Konoha. They see Tenten as an easy target since she is often on solo missions or training alone. These ninjas might be using cruel and unethical methods to try and break her spirit or get some sort of advantage over Konoha.
In this fanfiction, Tenten might be in a mission where she is captured by an enemy village. They are abusing her to get information about Konoha. Naruto, who is out on a search for her, uses his shadow clones to infiltrate the enemy base. Once he finds Tenten, he battles the captors. His unwavering determination and the power of the Nine - Tails' chakra help him defeat them all. He then rescues Tenten and they make their way back to Konoha together, with Tenten being very grateful to Naruto for saving her.
It could be that Might Guy is under some sort of mind - control. So, without his normal self - control, he attacks Tenten, making it necessary for Naruto to save her.
Sure, it's possible. Naruto has his own set of powers and a strong sense of justice. In the fanfiction world, he could see Tenten in trouble and decide to act. He might not fully understand the concept of gay fanfiction, but he doesn't need to. All he needs to do is recognize that Tenten is in a bad situation and use his abilities like the Rasengan or his ability to make friends and allies to get her out of it. It would be like one of his normal rescue missions, just in a different setting.
Naruto could use his shadow clone jutsu to create distractions. While Gai is busy dealing with the clones, Naruto can quickly get Tenten to a safe place.
Naruto might be really confused at first. He's used to people being friendly or having normal crushes, but a yandere is a whole different level. He'd probably try to talk to her and understand why she's acting so strangely.