Naruto might have a more mature look. His hair could be a bit longer and he might have some scars on his face from his many battles. He could also be wearing a more elaborate version of his Hokage cloak, with new symbols representing his achievements over the years.
Sasuke could have a completely different style. He may have given up his traditional Uchiha attire for something more practical and less conspicuous. His Sharingan might have evolved in a way that is visible in his eyes, with new patterns or colors.
Naruto's design could be updated to reflect a more modern style while still keeping his iconic orange jumpsuit. Maybe his hair would be a bit shorter or styled differently. Sasuke could have a more refined look, with his Uchiha clan symbol more subtly incorporated into his clothing. Sakura might have a more practical outfit for combat, instead of her short skirt. Her hair could also be in a ponytail more often for convenience. Kakashi could have a different mask design, perhaps one that shows a bit more of his face.
For Naruto characters in Tokyo Ghoul x Naruto fanfictions, they might get some ghoul - like features. For example, Naruto could have red eyes like a ghoul when he taps into some new power. As for Tokyo Ghoul characters in the Naruto world, they might start wearing ninja - style clothing. Kaneki might don a headband like the ones in Naruto.
The unique character designs in both series offer a lot of inspiration for fanfiction. In Kingdom Hearts, Sora's spiky hair and his Keyblade are iconic. In Naruto, Naruto's orange jumpsuit and his headband are instantly recognizable. Fanfiction writers can play with these designs. For example, they might describe how Naruto would react to seeing Sora's Keyblade for the first time, or how Sora would view Naruto's ninja gear.
They can change the physical appearance of Naruto characters. For instance, they might develop unique markings similar to those associated with Jenova in Final Fantasy. Their abilities also change. A character might gain the ability to manipulate matter, which is something not typical in the Naruto world. This could be due to the mutagenic nature of Jenova cells.
The Persona characters might get a more ninja - like aesthetic. For example, their school uniforms could be modified with elements like ninja tabi shoes or kunai holders. Their hair might also be styled in a more practical way for combat, similar to the Senran Kagura characters. On the other hand, the Senran Kagura characters could get some elements from the Persona world. Maybe they would have some modern - day accessories like cell phones with Persona - themed cases. Their ninja outfits could also incorporate some of the color schemes or symbols associated with the Persona characters.
One interesting plot twist could be that Naruto discovers a new, hidden power within himself that has been dormant all this time. Maybe it's related to an ancient Uzumaki clan ability that was lost but resurfaces in this flash - forward scenario. This new power could change the balance of power in the ninja world.
Ruby could get some Jojo - style flair in her design. Maybe she'd have a more flamboyant cape, like some of the Jojo characters have with their long coats. Her scythe could also have some more intricate details inspired by Jojo weapon designs. Weiss might have a stand - like ornament on her dress, and her hair could be styled in a more elaborate way similar to some of the Jojo female characters.
Some characters might become closer if they share the same feelings about the fanfiction. For example, if two characters both find a certain part of the fanfiction hilarious, they could bond over that.
Well, when writing a flash forward, it's important to give enough context so readers aren't confused. Also, make sure it adds tension or builds anticipation for what's to come. For example, you could show a potential outcome that the characters then strive to prevent or achieve.
His confidence would likely soar. Knowing he has the speed of the Yellow Flash, Naruto would feel more capable in battle and in general. He might be a bit more cocky at times, but still retain his kind heart. For example, he could show off his speed to his friends in a friendly, competitive way.