One common theme is friendship. Their relationship is often depicted as a deep and meaningful friendship that can overcome difficulties. For example, in many fanfics, they help each other out when facing external threats or internal doubts.
There's also 'Aoba's Encounter with Ren'. This fanfic focuses on a specific event that brings Aoba and Ren closer. It's really interesting as it shows their different personalities interacting in a new situation. The author does a great job of capturing their essence.
Love, whether it's platonic or romantic, is also a prevalent theme. Some fanfictions might gradually develop a romantic relationship between aoba and ren, showing their first blushes of love, their awkward moments, and how they come to terms with their feelings for each other. This can add a lot of depth and sweetness to the story.
One common theme is probably their relationship development. It could be about how they first met and how their feelings grew over time. Another theme might be adventure, with them going on some sort of journey together.
Romance is a very common theme. Writers often explore the deepening relationship between Ren and Aoba, from their initial attraction to a more profound emotional connection. Another common theme is adventure, where they go on quests or face challenges together in the DMMD world.
One common theme could be the exploration of their relationship. Since it's fanfiction about two specific characters, the relationship between Aoba and Ren is often central. Another theme might be self - discovery as they interact with each other.
You could also try Tumblr. There are many fanfic writers who post snippets or links to their 'aoba x ren fanfiction' on their blogs. Sometimes, Tumblr users also form communities where they discuss and recommend different fanfics. It's a great way to discover new and interesting stories about this pairing.
One great source could be Archive of Our Own (AO3). There are many talented writers on there who create interesting stories about Ren x Aoba. Just search for 'dmmd Ren x Aoba' in the search bar and you'll find a variety of fanfictions with different themes like adventure, romance, or mystery.
A Koujaku x Aoba lemon fanfic might explore their relationship in an interesting way. It could focus on their unique bond, perhaps in a more romantic or angsty context. Maybe it delves into how their personalities interact, with Koujaku's strong and protective nature and Aoba's more complex and sometimes vulnerable side.
Social media platforms can also be useful. For example, on Tumblr, there are many fandom - related blogs that might post or reblog Ren x Aoba fanfiction. You can use the search function on Tumblr to look for relevant posts, but be aware that the search results can be a bit chaotic and you might need to dig a bit to find exactly what you're looking for.