One common trope is the 'outsider who understands'. The OC is often an outsider in some way, whether it be from a different village or having a unique power, but they seem to understand Sasuke on a deeper level than others. Another is the 'love - against - all - odds' trope. Since Sasuke is a complex and often aloof character, the OC usually has to overcome many obstacles to get close to him.
A lot of 'naruto oc x sasuke fanfiction' also uses the 'power - couple' trope. Once the OC and Sasuke get together, they become a formidable force. They often train together and develop new techniques as a team. This trope is appealing as it shows how two strong characters can complement each other and be even stronger when united.
Another theme is power and growth. The OC usually has some unique power or ability. Their interactions with Sasuke lead to both of them growing in terms of power. This could be in combat skills or in understanding the complex nature of the ninja world. For instance, they might face a powerful enemy together and in the process, both Sasuke and the OC become stronger and more well - rounded characters.
One common trope is the 'fish out of water' situation. For example, if the OC is from a different time or place than the canon world, like an OC from modern times ending up in Middle - earth in a Lord of the Rings 'oc x cannon fanfiction'. Another is the 'love at first sight' trope, where the OC and the canon character fall for each other immediately. It's often used to quickly establish a relationship in the story.
One often - seen trope is the 'oc with a special power'. This power can either be a threat or an asset to the Akatsuki. It creates interesting dynamics as the Akatsuki members might want to use the oc for their power or protect them from others who would. Also, there's the 'redemption arc' trope for the Akatsuki through the oc's influence. The oc might make one or more of the members question their actions and seek a different path.
One common theme is redemption. The oc often helps Sasuke find a way to redeem himself, either from his past actions or his inner turmoil. For example, in many stories, the oc's presence makes Sasuke question his thirst for revenge.
One common trope is the over - protective yandere. The yandere character in these fanfics often goes to extreme lengths to protect the Marvel OC, even if it means going against other characters or the law. For example, they might fight off villains in a very brutal way just to keep the OC safe.
A common trope is the 'forbidden love' trope. Since Sebastian has his own duties and often a dark nature in many interpretations, a relationship with a female oc can be seen as something that goes against the norm or is dangerous. Another is the 'damsel in distress' trope where the female oc gets into trouble and Sebastian has to save her.
One common trope is the 'opposites attract' scenario. The grand highblood's often menacing or complex nature is contrasted with the oc's more innocent or different qualities. This creates a dynamic relationship.
One common trope is the excessive focus on Naruto having a harem. Writers often create multiple female characters being attracted to Naruto. Another is the bashing of Sasuke, where he might be portrayed as a villain or just an unlikable character. For example, they may make Sasuke act out of character in order to make Naruto look better in the eyes of the harem members.
One common trope is the intense jealousy of the yandere Fem Sasuke. She might get jealous over Naruto's interactions with other characters, even if they're just friendly. Another trope could be her overprotectiveness. For example, she'd go to great lengths to keep Naruto safe from any perceived threats. Also, there's often a lot of internal conflict within Naruto as he tries to deal with this new, intense version of Sasuke. He might be attracted to her in some ways but also be a bit afraid of her extreme behavior.
One great 'Naruto Sasuke x OC fanfiction' is 'A New Path'. It has a really interesting OC who has unique abilities and her relationship with Sasuke is full of twists and turns. The story also weaves in elements from the original Naruto plot really well.