Perhaps there's a prophecy in both worlds that Naruto and Jinx are the ones who can prevent a great disaster. They initially don't believe it but as strange events start to occur, they are forced to work together. Jinx's explosive devices could be combined with Naruto's Rasengan in some creative ways to defeat the approaching doom. Their relationship could be full of bickering at first, but as they face challenges, they start to respect and rely on each other.
A possible storyline could be that Jinx gets transported to the Naruto universe. She might initially think it's a new place to cause chaos. She starts by attacking a small village, but Naruto shows up to defend it. Instead of fighting her right away, Naruto tries to understand why she's so intent on destruction. Jinx, being confused by Naruto's kindness, starts to question her own motives for causing chaos.
Naruto's ability to create multiple shadow clones could be used in a really interesting way with Jinx's chaos - causing style. For example, the shadow clones could set up distractions while Jinx plants her explosive traps. Then, when the enemies are caught in the chaos, Naruto could use his Rasengan to finish them off.
One way their worlds could collide is through a magical rift. Maybe in a fanfiction, a powerful mage accidentally opens a rift between the Naruto universe and the League of Legends world. Jinx, being the chaotic character she is, stumbles through it and ends up in Konoha. There, she might cause all sorts of mayhem with her explosives, while the ninjas of Konoha, used to their own kind of chaos, try to figure out what to do with her. Naruto, with his never - give - up attitude, could be the one to try and befriend her, thinking that there's good in everyone.
One possibility could be that Naruto, for some reason, joins the League of Legends world and then betrays the other champions. Maybe he's been influenced by an evil force. For example, he could be tricked into believing that the League is actually a threat to his own world of Naruto, so he turns against them.
The fanfiction might revolve around a team in League of Legends. One of the members experiences a loss of mind because of a personal tragedy off - the - field. This could be something like the loss of a loved one or betrayal by someone they trusted. Their mental state then affects their performance in the game and the overall dynamics of the team.
One possible plot could be that Naruto is somehow transported to the DC Universe. He teams up with the Justice League to stop an evil force that is using a combination of Naruto - style ninjutsu and advanced technology from the DC world. For example, Lex Luthor could be the mastermind behind this, having found a way to harness chakra and is using it to create powerful and dangerous weapons. Naruto's skills in combat and his ability to sense and manipulate chakra would be a great asset to the Justice League, and in return, the League could teach Naruto about their powers and technology.
One idea could be Naruto being adopted by a League of Legends champion from Ionia, like Karma. She could teach Naruto about the spiritual balance in Ionia, which is somewhat similar to the chakra balance in Naruto's world. And Naruto could bring his ninja skills to help protect Ionia from threats.
A possible plot is that Ahri is on a mission to find a way to drain the dark magic that is corrupting a part of the League of Legends world. Along the way, she teams up with some unlikely allies. As she tries to drain the dark magic, she faces many challenges, including powerful dark entities that try to stop her. She also has to figure out how to contain the drained magic without it corrupting her in the process. This journey could be filled with battles, self - discovery, and moral choices for Ahri.
One possible plot idea could be that James Bond is on a mission and crosses paths with Jinx. They start off as rivals, each with their own goals, but as the story progresses, they realize they have to work together. Their relationship could develop from mutual respect to something more romantic, all while facing various dangerous adversaries.
One idea could be that Jinx somehow gets transported to the Naruto universe. She might initially be seen as a strange and powerful figure. Naruto, being the curious and friendly type, would approach her. Jinx could then start causing chaos in the Hidden Leaf Village, which Naruto has to deal with while also trying to understand her. And they could gradually form an unlikely friendship as they learn from each other's worlds.