Well, in this fanfiction, Naruto might become a chef because he wants to bring people together through food. Since he's always been about unity, he could start a small eatery where people from different villages can come and enjoy a meal. He'd probably make dishes that are inspired by his travels. He could incorporate different elements from the places he's visited during his ninja missions. Also, his friends like Sasuke and Sakura might be his first customers and give him feedback. Naruto would be the kind of chef who puts his heart into every dish, just like he put his heart into protecting the village.
The story could be that Naruto discovers his passion for cooking after tasting some really delicious food during a mission. He decides to train under a master chef in the Hidden Leaf village. As a chef, he would use his rasengan - like energy in a new way. Instead of using it to fight, he could use it to blend ingredients perfectly or create a special cooking technique. His dishes would probably be big and bold, just like his personality. He might also use his chakra to enhance the flavors of the food, creating a unique dining experience for his customers.
One possible storyline could be that Naruto, through some strange dimension - hopping incident, ends up in the One Piece world. There, he witnesses Doflamingo's power and charisma from afar. Doflamingo's ability to control and manipulate situations might intrigue Naruto, who has always been about facing strong opponents. He starts to study Doflamingo's tactics and gradually becomes a fan, trying to incorporate some of Doflamingo's strategic thinking into his own battles, all while still maintaining his core values from the Naruto world.
Well, in this fanfiction, Naruto might become Tia Harribel due to a powerful magic spell gone wrong. Naruto's chakra system could interact with Harribel's reiatsu in unexpected ways. For example, he could use his shadow clone jutsu but with a reiatsu - infused twist. And they could go on a journey to reverse the spell while facing challenges from both their worlds that are after the unique power Naruto now has as Harribel.
Well, in such a fanfiction, Naruto being a Kryptonian would mean he has heat vision. This new power could be used in battles against the Akatsuki. Instead of using Rasengan, he could simply use his heat vision to take out opponents. Also, his invulnerability would make him a force to be reckoned with. He could walk through most attacks without a scratch. His character might also change as he has to deal with these new powers and the responsibility that comes with them. It's an interesting concept that would mix the Naruto world with the Kryptonian lore.
In a fanfiction where Naruto becomes Obito, it could be due to an outside force. For example, an ancient evil entity that wants to disrupt the balance of the ninja world. It targets Naruto and messes with his mind, implanting Obito - like thoughts and desires. Naruto would then struggle between his original self and this new, Obito - influenced persona, leading to many internal and external conflicts within the story.
Perhaps Naruto as a teacher would focus on teaching his students about the different chakra natures. He could share his knowledge of how to master the Nine - Tails' chakra and help students with their own chakra control. He might also take them on field trips to important ninja locations in the Hidden Leaf Village to give them a practical understanding of their heritage.
Well, Naruto could gain the power of the Juubi in many ways. Maybe through some ancient ritual or a powerful enemy's defeat that transfers the Juubi's essence to him. Once he becomes the new Juubi, his physical abilities would skyrocket. He'd have even greater chakra reserves and strength, allowing him to protect the Hidden Leaf like never before.
It could start with Naruto being sent on a mission to an unknown realm. There, he meets someone who is very much like the Red Hood. They team up and Naruto learns about the Red Hood's ideology. Over time, he realizes that he can better protect this new world by becoming like the Red Hood. He would then start training in the Red Hood's combat style while still having his ninja abilities as an advantage.
He could start by using magic in the kitchen. For example, he might use a spell to make the ingredients fly to the pan at just the right time. He could create unique dishes inspired by his Hogwarts experiences, like a potion - flavored soup. Maybe he'd open a wizard - themed restaurant where muggles and wizards alike could enjoy his magical cooking.
If Naruto becomes a villain in the DC crossover, he might set his sights on Superman. Naruto could believe that Superman's power is a threat to the balance he wants to create. He would use his ninjutsu to try and take on Superman. For example, he could use his Rasengan, a powerful spinning ball of chakra. However, Superman's strength and heat vision would be tough for Naruto to overcome. This would lead to an epic battle between the two, with the other DC heroes and Naruto's possible allies getting involved as well.
One possible storyline could be that Jason Todd, after his resurrection, starts to see Batman in a new light. Maybe he begins to study Batman's methods more closely, realizing the good he was trying to do all along. He could start collecting Batman memorabilia and secretly helping Batman from the shadows, all while trying to come to terms with his own complex relationship with the Dark Knight.