Well, he might gain new powers which could make him more confident. For example, if one of the devil fruits gives him the power of flight, he would feel more powerful and it could change his approach to battles. He might become a bit more adventurous too, as he explores the limits of his new abilities.
He could eat the Pika Pika no Mi (Glint - Glint Fruit) which gives the power of light, allowing him to move at the speed of light and create powerful light - based attacks. And perhaps the Yami Yami no Mi (Darkness - Darkness Fruit) which can absorb other attacks and create a gravitational pull. Combining the powers of light and darkness would be quite a unique and powerful combination for Naruto in this fanfiction.
One potential combination could be if Naruto ate the Ope - Ope Fruit (giving surgical - like powers) and the Inu - Inu Fruit (Dog). He could use the Ope - Ope powers to manipulate his body parts while in his Dog form, perhaps making his attacks more precise or his defenses stronger. This would also open up a whole new set of strategies for him in battles. It's all about how the fanfiction author would choose to blend these very different power sets and how Naruto would learn to use them effectively.
The political situation in Naruto's world would be affected too. Countries might start hunting for Devil Fruits to give their ninja an edge. This could lead to wars over the possession of these fruits. In addition, the relationship between humans and tailed beasts might change. Tailed beasts might see those with Devil Fruit powers as a new threat or a potential ally. And ninja villages would need to develop new strategies to deal with the unpredictable nature of Logia - type powers.
In the Naruto universe, Devil Fruits are from One Piece, and Naruto's world has its own power system like chakra. So, it's highly unlikely in the original Naruto story. However, in fanfiction, anything can happen. The author might create some kind of crossover logic to make it possible, like a strange portal connecting the two universes.
Another fanfiction concept could involve Naruto being sent to the One Piece world through some kind of strange ninja jutsu gone wrong. There, he eats a Logia Devil Fruit that allows him to turn into water. He teams up with the Straw Hat Pirates and uses his water - based powers, along with his ninja knowledge of chakra control, to help them in their adventures. For example, he could use his water form to put out fires on the ship or create water - based defenses against enemies.
The powers of devil fruits can be integrated by having characters discover them in a strange new land that has a connection to both the Naruto and One Piece universes. For example, a portal could open up and Naruto and his friends find a devil fruit tree. They then have to figure out how these new powers work within the context of their own ninja abilities. Maybe the devil fruit powers can be combined with chakra to create even more powerful attacks.
Devil Fruits would make the Chunin Exams far more unpredictable. Some characters could suddenly have powers like flight or super strength. This would disrupt the normal balance of power among the genin. For instance, a character with a Zoan - type Devil Fruit could transform into a powerful beast, giving them an advantage in combat.
The cultural clash is really interesting too. Naruto comes from a world with a very different culture compared to the DxD world. Adding Devil Fruits into the mix makes it even more complex. For instance, Naruto's values of loyalty and hard work might interact in unexpected ways with the more morally ambiguous elements of the DxD world and the power - hungry nature often associated with Devil Fruit users.
There were many different demonic fruits in One Piece, and the following were ten of them: 1. Demon Fruit-After eating it, you will gain the ability to change yourself or others 'abilities such as flying, transformation, elemental manipulation, etc. 2. Rubber-like fruit--can create rubber-like elasticity that allows one's body to bounce, transform, bend, etc. 3. Demon Fruit--After eating it, you will gain the ability to control flames, such as using fireballs or flame jets to attack enemies. 4. Demon Fruit--After eating it, you can control water, such as using a water gun or a water column to attack enemies. 5. Demon Fruit--After eating it, you will gain the ability to control the wind, such as using a wind sword or wind blade to attack enemies. 6. Demon Fruit--After eating it, you will gain the ability to control lava, such as using lava waves or lava jets to attack enemies. 7. Demon Fruit--After eating it, you will gain the ability to control earthquakes, such as using earthquake waves or earthquake attacks to attack enemies. 8. Demon Fruit--After eating it, you will gain the ability to control lightning, such as using lightning waves or lightning attacks to attack enemies. 9. Demon Fruit--After eating it, you can gain the ability to control ice, such as using ice swords or icicles to attack enemies. 10 Demon Fruit-After eating it, you will gain the ability to control black holes, such as using black hole waves or black hole attacks to attack enemies.
One Piece's Devil Fruit was an ability that granted the consumer a special ability. Currently, One Piece's top ten demonic fruits were: [1. Devil Fruit-Fire Ball: Able to allow the user to shoot fireballs at the enemy.] [2. Demon Fruit-Iceberg: Able to turn the user into ice and freeze the enemy.] [3. Devil Fruit·Magma (Magma): Able to turn the consumer into magma and melt the enemy.] 4. Devil Fruit-Lightning: Able to allow the user to shoot lightning at the enemy. [5. Devil's Fruit-Gravity: Grants the user the ability to fly or fall freely in the air.] [6. Demonic Fruit-Wormhole (Wormhole): Able to allow the consumer to quickly move to other places through a wormhole.] [7. Demon Fruit, Fruit Ability (Fruit Awakening): Able to allow the consumer to obtain the ability of other demon fruits, such as the ability of rubber fruit, swelling and jumping.] [8. Devil's Fruit, Nage Mode: Grants the user defensive and offensive abilities to enhance their combat ability.] [9. Demon Fruit, transparent fruit (transparent fruit): Able to make the consumer invisible or able to pass through walls.] 10 Demon Fruit, Demon Strayer: Grants the user the ability to quickly traverse through Demon Island and other regions.