Issei develops by facing various challenges. Each encounter in the harem and with the milf - hunting situations makes him grow. He becomes more confident over time.
Issei's strength in the light novel is significant. His power increases through training, experiences, and unique opportunities, making him a formidable character.
Well, it makes him seem more like a regular, well - rounded person. In the original, his perverted nature is quite prominent. But in these fanfictions, he becomes someone you can look up to. He might be seen as a role model for younger readers who don't want to be associated with the perverted side of his character.
Maybe he just doesn't like the way supernatural elements are often exaggerated or misrepresented in fanfiction. He might prefer more realistic or traditional forms of storytelling.
A great 'rias and issei fanfic' often has a strong focus on their relationship. It should show their growth as a couple, like how they overcome misunderstandings and support each other. For example, in some fics, Issei's determination helps Rias in her devil duties, and Rias's wisdom guides Issei in his power development.
One great Highschool DxD Issei magic fanfiction is 'Issei's Magic Evolution'. It shows Issei developing unique magical abilities that are different from his usual power set in the original series. This adds an interesting twist to his character.
There's a fanfiction titled 'Female Ddraig's Encounter with Issei'. In this, the author delves deep into how a female Ddraig would view Issei. It's full of character development and new scenarios that are quite different from the canon. For example, their conversations are more nuanced as the gender change of Ddraig affects her perspective on Issei.
Many fanfictions in this category focus on the theme of trust. With Ddraig being female, the building of trust between her and Issei can be a central part of the story. It could be about how they learn to trust each other in different situations, like in battles or when dealing with other powerful characters. Also, the theme of identity is present as Ddraig's gender change can make both characters re - evaluate their own identities in relation to each other.