In relationships with potential love interests, his coldness can be a major obstacle. If he was previously a warm and friendly person towards a girl he liked, the sudden coldness could make her think he's no longer interested. This can create a lot of misunderstandings and drama in the fanfiction.
In some fanfictions, Issei's character develops by becoming more mature. He realizes the consequences of his actions more deeply. For example, when he uses his powers, he starts to consider the collateral damage and tries to minimize it, which is a big step from his more impulsive self in the original story.
Well, Issei is known for his determination and his unique situation in the Highschool DxD world. Fanfiction about him could focus on how he copes with his new powers and responsibilities. For example, a fanfic could be about him training harder to master his powers and how that affects his relationships with his friends and allies at school.
Yes, there might be. There are a vast number of fanfictions out there for various combinations of popular culture elements. Since Highschool DxD has a large fan base and Godzilla is an iconic figure, it's not unlikely that some creative fans have combined the two in a fanfiction. You can try searching on popular fanfiction websites to find such works.
There could be. Fanfiction writers are known for their wild and creative crossovers. Given the popularity of Highschool DxD and the unique concept of Guyver, it's entirely possible that an Issei - Guyver fanfiction exists. You might want to check popular fanfiction websites like Archive of Our Own or FanFiction.net. Just search for relevant keywords like 'Highschool DxD Issei Guyver' and see if any relevant stories pop up.
The unique aspect could be the portrayal of Issei in a 'cold' state. Usually, Issei is known for his pervy and outgoing nature. In 'cold' fanfictions, he might be more reserved or have a different personality, which can offer a fresh perspective on the character and the story.
In many fanfictions, Issei's character develops in terms of power. He starts as a relatively weak character and gradually becomes stronger through training and various challenges. For example, he might learn new techniques from a mysterious mentor or gain new powers from a magical artifact.
There are fanfictions where Issei leaves to protect others. He might learn of a great danger that is coming and decides that the best way to keep his friends and loved ones safe is to remove himself from the situation. So, he leaves, hoping that the enemy will follow him instead of targeting those he cares about.
His divine lineage would likely make Issei more confident. Knowing he has such a powerful mother in Amaterasu, he would feel like he has a greater purpose. This newfound confidence could lead to him being more assertive in battles and in his relationships with other characters.
In many 'Highschool DxD' fanfictions, Issei's character development is a central focus. His first experiences, whether it's in battles, relationships, or other aspects, are often explored in different ways by different authors. Some fanfictions might take a more comical approach, while others could be more serious and in - depth. Without more specific details, it's hard to say exactly what that particular fanfiction about his first experience might be like.
I'm not really into such specific and rather inappropriate topics in fanfiction. However, in general, in Highschool DxD, Issei's character experiences many growth and development aspects throughout the story that are more suitable for general discussion, like his growth as a fighter and his relationships with other characters.