Another scenario could be that a Marine has some sort of special ability that is related to the chakra system in Naruto. This Marine could be sent to the Naruto world to study their way of using chakra. Along the way, he meets Naruto and they form an unlikely friendship. Naruto could teach him more about chakra control, and the Marine could introduce Naruto to some modern military strategies.
A possible plot could be a battle. The US Marines might be facing a threat in their world that has some similarities to the powerful enemies in the Naruto universe. So, they seek help from Naruto and his friends. Naruto, with his Rasengan and other jutsu, could join the Marines in the fight against the common enemy.
One popular one could be a crossover with a science - fiction universe like 'Star Wars'. Picture a US Marine finding themselves in the middle of a galactic battle. They'd bring their combat skills and military discipline to the chaotic world of lightsabers and spaceships.
Well, a fanfiction involving Naruto and a Rogue Marine could be really interesting. Maybe the Rogue Marine could be from a different world and end up in the Naruto universe. They could have unique powers that would either clash or work well with the ninja abilities in Naruto. For example, the Marine's use of guns and advanced technology might be a new threat or a useful tool in the Naruto world.
First, decide on the two universes you want to cross over. If it's the US Marines and, say, a fantasy world of elves and magic. Then, think of a plot device to bring them together, like a magical portal opening up in a Marine base.
Well, one unique feature is the combination of Naruto's ninja world with a marine setting. It often involves Naruto using his ninja techniques in water - based environments, like using Rasengan underwater. This creates a whole new set of challenges and action scenes.
During the Korean War, a group of US Marines were surrounded by the enemy. They refused to surrender. Instead, they fought with all their might. They fought through the night, and their fierce resistance made the enemy think twice about attacking them further. In the end, they were rescued, but their story of standing their ground against all odds became a symbol of heroism in the US Marine Corps.
Yes. There could be a fanfiction where a US Marine accidentally stumbles into the wizarding world through a portal. He meets Harry Potter, who is in the middle of a conflict with a new dark force. The Marine's knowledge of modern warfare and technology helps Harry in devising new strategies to fight the enemy. The unique part could be how the two different worlds' elements, like magic spells and military equipment, are combined in the battle scenes.
It could start with a strange portal opening up in the Naruto world, and out comes the Rogue Marine. Confused and on high alert, he immediately finds himself surrounded by ninjas. Naruto steps forward, curious about this strange new person. Another way could be that the Rogue Marine is on a mission in his own world that goes wrong and he somehow gets transported to the Naruto universe during the chaos.
Naruto characters' powers can be integrated in various ways. For example, Sakura's superhuman strength could be used in combat situations within the Marines. She could be part of a special forces team that deals with tough pirate opponents. Her medical skills could also be valuable for treating injured Marines on board ships or at Marine bases.