One common theme is redemption. Often the oc has to deal with their own flaws or sins and find a way to redeem themselves in the world of the seven deadly sins.
Love and loyalty are also big themes. The relationship between Escanor and the OC can range from a deep friendship to a romantic love. In some fanfictions, the OC will be fiercely loyal to Escanor, even in the face of great danger. It's also common to see the theme of self - discovery. The OC, through their interactions with Escanor, discovers more about themselves, their abilities, and their place in the world of the seven deadly sins.
The theme of self - discovery is also prevalent. As the gamer interacts with the world of the Seven Deadly Sins, they learn more about themselves, their weaknesses and strengths. They might realize that they have some traits related to the sins and have to work on overcoming them while using their other qualities to succeed in the fanfiction world.
One common theme is the exploration of power dynamics. When characters from different universes meet, like in a crossover with Attack on Titan and The Seven Deadly Sins, they have to figure out who is stronger and how their powers interact. Another theme is the clash of values. Characters from a more morally upright universe like My Hero Academia crossing over with The Seven Deadly Sins may have different views on right and wrong.
One common theme is redemption. The reader often enters the story with the goal of helping a character associated with a deadly sin find redemption. For example, if the character represents envy, the reader might show them a different way of life to overcome that envy.
Well, a frequent theme is the transformation of Naruto's character. With his godlike abilities and the influence of the seven deadly sins, his personality can change. Also, the theme of redemption often appears. Suppose Naruto accidentally gives in to the sin of sloth and neglects his duties. He then has to find a way to redeem himself. Additionally, the exploration of good and evil is common. Is having godlike power a good thing if it can lead to the sins? It makes for an interesting exploration.
One common theme is power. Both Naruto and the Seven Deadly Sins series have characters with strong powers. So in the fanfiction, it's often about how the powers interact or combine. Another theme is redemption. Just as some characters in Naruto seek redemption, the concept of the Sins being redeemed is also explored in these crossovers.
A common theme is the exploration of the characters' personalities in the context of both universes. For example, how a character from RWBY might react to the concept of the Seven Deadly Sins. Another theme could be power - related, like how the powers in RWBY compare or interact with the powers associated with the Seven Deadly Sins.
The exploration of morality is a big theme. The seven deadly sins are used as a framework to question what is right and wrong in the MLP world. Also, the theme of chaos versus order often comes up. The sins can bring chaos, and the characters must restore order. In some fanfics, friendship is also a key theme. The ponies' friendships are tested when the sins are involved, and they have to rely on those bonds to get through difficult situations.
One common theme is character transformation. For example, a character might start to show traits of a particular sin more prominently and then has to overcome it. Another theme could be the clash between the values of the Naruto world and the concepts of the seven deadly sins.
Well, one common theme is the exploration of different cultures. If it's a crossover with a series set in a different cultural context, like a historical Chinese or Indian inspired series, the 'Seven Deadly Sins' characters would experience new cultural norms. Another important theme is the struggle for power. In many crossovers, the powerful characters from both franchises vie for control or influence in the new combined world. This can lead to intense battles and power - plays that are exciting to read about.