In this 'Dark Godlike Issei' fanfiction, his personality would also change. He might become more aloof and brooding, as his new power isolates him. He could still have his heroic side, but it would be tempered by his new, darker nature. He might struggle with decisions, not knowing whether to use his power for good or give in to the darker temptations that come with it.
One great aspect of 'Dark Godlike Issei' fanfiction could be the exploration of new powers. Issei, in a dark and godlike form, might have abilities that are far beyond his normal state. For example, he could control dark elements like shadow manipulation or have the power to corrupt things at a touch. This would lead to really interesting storylines where he has to struggle with the morality of using such powers.
In Naruto fanfiction, a 'dark godlike bloodline' can bring a lot of unique elements. It might endow the character with extraordinary powers like super strength, unique jutsu, or even the ability to control dark elements. For example, they could have the power to manipulate shadows in a way that is far beyond normal ninja skills, making them a formidable force in the Naruto universe.
In this type of fanfiction, Percy's godlike nature would make him a force to be reckoned with in the shinobi world. His powers, such as his superhuman strength and his connection to the sea gods, could be translated into shinobi - like skills. For instance, his connection to the sea could allow him to control water - based jutsu more effectively. The 'dark' element might manifest as a darker personality, perhaps caused by some trauma in his past. He could be more ruthless and less likely to follow the traditional shinobi code of honor.
Often, a 'godlike issei' in fanfiction is depicted as having a more dominant personality. He may be more confident and in control, whether it's in battle or in relationships. His appearance might also change, with a more imposing or even divine - like aura. Maybe he has glowing eyes or a more muscular physique to match his new - found god - like status. He could also have a deeper connection to the supernatural elements of the story's world, being able to access and control powers that were previously unknown or unavailable.
In this fanfiction, Naruto's 'dark godlike' form might change the power balance in Highschool DxD. Since Naruto has always been about growth and power - up in his original story, in this crossover, he could quickly rise to a very high - level position. His values from the Naruto world might clash with the values in Highschool DxD. For instance, his belief in friendship and hard work could be a contrast to some of the more self - serving or power - hungry characters in Highschool DxD. This could lead to some interesting story arcs.
I'm not really into that particular type of fanfiction myself. However, if you look for fanfiction communities dedicated to the source material that 'godlike issei' is from, you may be able to find some leads. For example, if it's related to a certain anime or manga, check out forums or groups where fans discuss and share their fanfiction works. They could point you in the right direction for 'godlike issei' fanfiction, whether it has 'lemon' elements or not.
The concept can also lead to a more complex exploration of the wizarding world's politics. A godlike Harry Potter may decide to take over the Ministry of Magic or change the way the wizarding society is governed. This would involve dealing with different factions, some who support his new regime and others who oppose it, creating a lot of political intrigue and conflict within the dark fanfiction plot.
The development might involve Naruto being pushed to the brink by the neglect. His godlike abilities could be a result of some ancient or forbidden power source. As he discovers these powers, he might start to view the world differently. The 'dark' part could be him going against the traditional shinobi values of the village, seeing them as the cause of his suffering. He may then use his powers to seek revenge or create his own version of justice in a rather unorthodox and sometimes menacing way. For instance, he could use his powers to isolate the village that once neglected him, creating a sense of fear among its inhabitants.
The 'dark godlike Naruto neglected by family' in fanfiction can be seen as a reaction to his environment. His family's neglect is like a wound that festers. In response, he becomes this powerful, dark figure. It's like he's saying, 'If you don't care about me, I'll become someone you can't ignore.' This transformation can also attract different types of characters to him. Some might be drawn to his power, while others might see the hurt behind his new persona and try to reach out to him, even if it's a dangerous task.
Conflict is a major theme. When Issei crosses over into another universe, there are bound to be conflicts, whether it's against villains from that universe or differences in ideology with the characters there. For instance, in a crossover with 'Attack on Titan', Issei might have to deal with the Titans and also the complex political and moral issues within the Walls. And of course, there's always the theme of survival as he faces new and dangerous situations in the crossover.