There are quite a few possible scenarios. Imagine Naruto in a battle against the Akatsuki. With Shirou's power, he could project chakra chains similar to Kushina's to restrain his opponents. Or he could use the tracing ability to analyze the unique powers of each Akatsuki member and come up with a tailored counter - strategy. In a more peaceful scenario, Naruto could use the projection to create new buildings in the Hidden Leaf village more quickly, by projecting the blueprints as physical structures with his chakra.
One scenario could be that Naruto uses Shirou's tracing ability during a fight with Sasuke. He might be able to quickly understand and counter Sasuke's new jutsu that he developed during his time away. Another possibility is that Naruto uses projection to create a huge Rasengan - like structure that can cause massive destruction, similar to how Shirou projects his weapons on a large scale in some situations.
It could make Naruto's combat abilities more diverse. For example, Shirou's tracing ability might allow Naruto to quickly analyze and replicate his opponents' jutsu. This could give him an edge in battles against tough enemies like Pain or Madara. He might also be able to use Shirou's projection magic in creative ways, like projecting weapons with his chakra.
One possible scenario is that Naruto accidentally bumps into Yugao during a festival in the village. He's immediately smitten and starts following her around, trying to find excuses to talk to her. Another could be that Yugao is assigned to train Naruto for a special mission. Naruto, during the training, develops a crush on her because of her cool and skilled fighting style.
One possible scenario could be Naruto being constantly ostracized in the village. People might avoid him not just because of the Nine - Tails inside him, but also due to false rumors spread about him. For example, they could say he's a bad omen. This would lead to Naruto feeling extremely lonely and isolated, and he might start to train alone more often, distancing himself further from the possibility of making friends.
One possible scenario is during a victory celebration. After they successfully defeat a powerful enemy together, the joy and relief lead to a spontaneous kiss. Another could be in a moment of near - death. When one of them is in danger, the other realizes their true feelings and kisses them.
It could be an ancient inheritance. Maybe Naruto is a descendant of a long - forgotten clan that had special soul powers, and these powers have been dormant in his bloodline until now.
Well, in a 'Naruto has secret mission' fanfiction, Naruto could be tasked with establishing an alliance with a reclusive and powerful clan. This would require him to prove himself worthy and overcome their initial distrust. He may also be on a mission to find a long - lost jutsu that could change the balance of power in the ninja world, and he has to keep it a secret from other villages to prevent a scramble for it.
Maybe Naruto's illness is a result of some dark jutsu used against him. His illness could lead to him being unable to perform his ninja duties, and so his friends, like Sasuke and Sakura, have to take on extra missions to protect the village while also trying to find a way to heal him. They could search through ancient ninja scrolls for a remedy.
In some fanfictions, Naruto's Asura's power might manifest as enhanced physical strength. He could be able to lift extremely heavy objects or endure more damage in battles. For example, he might be able to take on multiple powerful enemies at once without getting tired easily.
One common scenario is Boruto getting to see Naruto in a super intense battle, showing off his amazing jutsu. Another could be Naruto using his power to protect the village, and Boruto watches in awe.
One common scenario is when a character's loved one is in mortal danger. Naruto, for example, if Hinata were in a life - threatening situation, his 'Power of Rage' would likely kick in, and he'd fight with extraordinary ferocity. Another scenario could be when a character's sense of justice is violated. Kakashi might experience the 'Power of Rage' if he saw innocent villagers being unjustly attacked.