One common theme could be adventure. Since they are often in an action - packed anime setting, fanfics might continue their adventures together. Another could be romance, exploring the relationship between Kamina and Yoko in more depth.
One great Gurren Lagann Simon x Kamina fanfiction is 'The Bond Beyond Drills'. It beautifully explores their relationship as they face challenges in the post - apocalyptic world. It delves deep into how Simon looks up to Kamina and how Kamina, in turn, sees Simon's potential.
I'm not sure about a specific 'kamina x yoko fanfic' to recommend. You could try searching on fanfic platforms like Archive of Our Own. They usually have a wide variety of fanfics, and you might be able to find some great ones about Kamina and Yoko there.
I'm sorry, but I don't have any specific kamina and yoko lemon fanfiction to recommend. You could try searching on popular fanfiction websites like Archive of Our Own or FanFiction.net.
One common theme is friendship. Their bond is a central part of the series, and fanfiction often explores how they support and inspire each other. Another theme is growth. Simon learns a lot from Kamina, and this growth in character is often delved into in fanfics.
The best fanfictions in this regard also play with the themes of the original series, such as the idea of breaking through limits. They might show Simon and Kamina achieving new heights together, both in terms of their personal growth and in their fight against the Spiral Nemesis. The emotional depth between the two characters needs to be palpable, whether it's through their conversations, their shared silences, or their reactions to each other's actions.
Well, some Gurren Lagann fanfiction sites might have a good collection of Kamina x Simon fanfics. You could also try searching on fanfiction.net. Look for stories with high ratings and lots of reviews, as those are usually the better - quality ones. They might show different aspects of their bond, like how Kamina inspired Simon to be braver.