I'm not sure specifically which 'aoba x ren lemon fanfiction' stories are good. You could try searching on fanfiction - dedicated websites like Archive of Our Own. There might be a variety of works there, but make sure to follow the website's rules and regulations.
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.
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.
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.
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.
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 great koujaku x aoba fanfiction is 'Aoba's Discovery'. It delves into their relationship in a very sweet way, showing how they support each other through various challenges. Another one is 'Koujaku and Aoba: Unspoken Bonds' which focuses on the unspoken feelings between them and how they gradually come to the surface.
There's a fanfiction called 'Mink and Aoba's Adventure'. In this story, they embark on a journey together, facing various challenges that test their friendship and loyalty. It's full of action and heart - warming moments. The author does a great job of capturing the essence of the characters and their dynamic.
I'm not sure specifically about Nozi and Aoba fanfiction that is yaoi but lemon - free. However, you can try searching on popular fanfiction platforms like Archive of Our Own. Use the relevant tags and filters to narrow down your search to find suitable stories.
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.