You can start by looking on popular fanfiction websites such as Archive of Our Own (AO3). It has a large collection of various fanfictions, and there's a good chance you'll find some louie x alph ones there.
Some louie x alph fanfiction could focus on their emotional connection. Maybe Alph has some personal issues and Louie is the one to help him through it. This kind of story can be really heart - warming as it shows the caring side of their relationship.
One plot idea could be that Natsu discovers a new, hidden power within his Alph Dragon Slayer abilities. Maybe he can communicate with ancient dragons that were previously unknown. Another idea is that he has to compete in a tournament against other dragon slayers with unique powers. This would lead to intense battles and character development.
Gundam and Luna Doujin novels are usually literary works that are creative adaptation of the Gundam series and the Luna series. The protagonist can be a reader who likes the Gundam series or the Luna series, or a character with a specific plot or background.
The main character could be a person with a Gundam or Luna Body, or a professional warrior who used a Gundam or Luna Body to fight. In some cases, the protagonist may develop a love story with another character, which is usually an important element in the story.
Some Gundam or Luna Doujin novels may have fictional Gundam or Luna characters. These characters may be new characters created by the author or adapted from existing Gundam or Luna characters.
Gundaluna's Doujinshi novels could cover a wide range of topics and styles, including science fiction, fantasy, romance, and so on. If you like the Gundam or Luna series, reading the Gundam and Luna Doujin novels might be an interesting choice.
I'm not sure which specific novel 'Luna Graced Abigail' you're referring to. There could be many characters named Luna and Abigail in various novels. Without more context, it's difficult to say exactly who they are.
In this fanfiction, for the relationship between Natsu and other characters, Natsu's new Alph Dragon Slayer powers could attract the attention of villains. This would make his friends more protective of him. For instance, Wendy could use her healing magic to help Natsu when he gets injured during battles against enemies interested in his powers. Natsu could also form new friendships with characters who are also interested in the secrets of the Alph Dragon Slayer magic. They could exchange knowledge and experiences, which would in turn develop Natsu's character and his relationships with others.
The Luna brothers might be known for a variety of their works. Regarding 'girls the luna brothers graphic novel', it depends on how widely it has been distributed and received. If it has been praised for its storytelling, character development, and the visual aspect, it could have helped in making them more recognized for this particular work. But it's also possible that they are more known for other graphic novels in their portfolio that have had a bigger impact in the industry.
For Harry, his growth could be shown through how he becomes more open - minded. He starts to embrace Luna's quirks and her different way of seeing things, which in turn makes him more accepting in general. For example, he might initially be a bit hesitant about Luna's belief in some of the more out - there magical creatures, but as they date, he starts to see the beauty in her imagination.