Perhaps Sasuke uses Sakura to get closer to some information. He might know that Sakura has connections or knowledge that can help him in his quest for revenge or for protecting the village. So he uses her in a strategic way while she is initially unaware of his motives. As the story progresses, their relationship could develop in complex ways.
Maybe Sasuke teaches him the Chidori in a moment of camaraderie. And for the Rasengan, it could be an older and wiser Naruto from the future who travels back in time to teach his younger self.
One interesting story could be where Sasuke uses Sakura's medical skills to his advantage during a difficult battle. He might rely on her to heal his wounds quickly so he can continue fighting.
Well, I don't have a particular 'sasuke uses sakura fanfic' at hand. However, when looking for such a fanfic, you should look for Naruto - related fanfic sections. You could also join Naruto fan communities on social media platforms and ask the members if they know of any good ones.
In many fanfictions, Naruto might master the Rasengan through intense and unique training methods. Maybe he gets some special guidance from an unexpected source, like a hidden shinobi in the village who has a different perspective on chakra control. This person could show Naruto some new ways to focus his chakra, which finally enables him to form the Rasengan successfully.
In some fanfictions, Kakashi could also play a role. He is very knowledgeable and has seen the Rasengan in action. He might offer some tips on chakra control, which is crucial for Naruto to master the Rasengan.
Well, Tsunade could be a great helper. She has extensive knowledge of chakra control and medical ninjutsu. She could teach Naruto how to use his chakra more precisely when creating the Rasengan, perhaps by showing him some medical - ninjutsu - based chakra control techniques that can be applied. Minato, Naruto's father, could also play a role. He was the one who originally created the Rasengan. He could appear in Naruto's dreams or in some sort of time - travel scenario and show Naruto some hidden aspects of the Rasengan creation that he didn't know before. And then there's Sakura. She's become very strong over time. She could use her strength and knowledge to assist Naruto, maybe by creating some sort of training regimen for him to improve his Rasengan creation skills.
There's a great one called 'Sasuke's Utilization of Sakura'. Here, Sasuke uses Sakura's physical strength. Sakura has trained hard and become quite powerful. Sasuke pairs up with her in battles, and he uses her brute force along with his own skills to defeat enemies that are much stronger than them individually.
I'm not entirely sure specifically as 'annabeth' is often from the Percy Jackson series and 'rasengan' is from Naruto. It could be a fan - created story that combines elements of both universes in some way, perhaps with Annabeth somehow getting involved with the power or concept of the Rasengan.
Well, in some fanfics, Naruto might add elements to the Rasengan through intense training and experimentation. He could study different chakra natures and find ways to combine them with the Rasengan's basic form. For example, he might infuse lightning chakra into it to make it more piercing and fast - like a lightning - enhanced Rasengan.