I'm not sure about specific 'male Corrin conquest fanfiction' off the top of my head. But you can try searching on fanfiction websites like Archive of Our Own. They usually have a wide variety of fanfictions based on different themes and characters.
One more option is to look for fanfiction collections or blogs that focus on Fire Emblem content. Sometimes, these blogs will curate and recommend fanfictions. They might have a section specifically for stories involving male Corrin in a conquest - type scenario. However, keep in mind that the quality of fanfictions can vary widely, so you may need to read through a few to find ones that really appeal to you.
One common theme could be the journey of male Corrin in the conquest. This might involve his growth as a leader and strategist.
One common theme is adventure. Since both Male and Female Corrin are often involved in battles and quests in the game, fanfictions might continue their adventures together, facing new enemies and challenges.
You can also check out some Fire Emblem - related forums. Sometimes fans share their fanfictions there. Just be aware that the quantity might be smaller compared to the big fanfiction platforms.
One popular type might be adventure - themed ones, where the two Corrins go on a quest together. Maybe they are exploring a mysterious new land full of magical creatures and ancient ruins.
I'm not sure about specific 'niles x male corrin fanfiction' works. But you can try searching on popular fanfiction websites like Archive of Our Own. There are usually a wide variety of fanfictions on different pairings, and you might find some great ones there.
Finding good corrin hurt fanfiction can be a bit tricky. One option is to join fan communities or forums dedicated to the relevant fandom. There, you can ask other fans if they know of any such fanfictions. They might be able to point you to some great reads based on their own experiences.
You could also try searching on social media platforms like Tumblr. There are many fanfiction writers who post snippets or links to their full works on their blogs. Look for tags related to Corrin and fanfiction. But be aware that the organization might not be as systematic as on dedicated fanfiction websites.
One great source could be fanfiction.net. There are often various stories about this pairing there. You can search for tags like'male robin' and 'female corrin' to narrow down the results.
A plotline might involve Niles and male Corrin having to go on a quest together. During this journey, they face various challenges that force them to rely on each other and in the process, their relationship deepens into a romantic one. For example, they could be exploring a dangerous, uncharted territory where they have to protect each other from wild beasts or solve complex puzzles to progress. There could also be a plotline where Niles has a secret that he is hesitant to share with male Corrin, but as their relationship grows, he eventually reveals it, which either strengthens or temporarily strains their bond.
Another good one is 'Cross - Worlds: Naruto and Corrin'. This fanfic focuses on the culture shock that both Naruto and Corrin experience when they meet. It shows how their unique powers can be combined in unexpected ways. The author does a great job of building the relationship between the two characters gradually, making it a very engaging story.