The setting is important. If it's set in the same world as the original, the details of the environment, like the ruins of the city or the military base, can add depth. Or if it's an alternate setting, it should be vividly described. Also, the emotions should be real. The anticipation, the shyness, and the passion in that kiss need to be palpable for the readers.
A good fanfiction would have well - developed characters. It should show how Armin and Mikasa's personalities lead to that kiss. For example, Armin's intelligence and Mikasa's protectiveness might play a role in their relationship development.
Well, perhaps there's a situation where they are on a dangerous mission. In a moment of what they think is their last, Armin and Mikasa kiss. It could be a way to express all the unsaid emotions, the fear, the love, and the comradeship they've had for years.
In a good 'Armin and Annie Kiss' fanfiction, the dialogue plays an important role. The way they communicate with each other can show their growing affection. Their conversations should be nuanced and reflect their personalities. Additionally, the fanfiction should explore the consequences of their kiss. How does it affect their relationships with other characters? Does it change their own self - perceptions? All these elements combined can make a fanfiction really stand out.
Character development is key. It should show how their relationship has evolved over time to reach that kiss moment. For instance, if it's set in the original 'Attack on Titan' universe, it should account for all the hardships they've been through together.
A really popular one is 'The Promise'. It delves into a world where Armin is injured and Mikasa takes care of him. This situation makes them both confront their feelings that have been hidden for so long.
Well, 'Under the Stars' is also a notable one. It takes place in a more peaceful setting where Mikasa and Armin can finally focus on their relationship. The author does a wonderful job of depicting their love in a very tender and believable way.
There is a fanfic called 'Armin and Mikasa: A New Perspective'. This one takes a different approach by imagining an alternate universe where they meet in a completely different setting. It's interesting because it shows how their personalities would still shine through even in a different context.
A Mikasa x Armin fanfic often explores their unique relationship. It could show their deep emotional bond that might have developed over their shared experiences in the story. For example, their mutual understanding of the harsh world they live in and how they support each other through difficult times.
Another theme is growth. They both grow as characters throughout the series, and in fanfictions, this growth is sometimes shown in relation to their relationship. Maybe Armin becomes more confident and Mikasa learns to open up more because of their bond.
Some Tumblr blogs dedicated to Attack on Titan fanfiction also post armin x mikasa stories. You might need to do some searching around different blogs to find the best ones.
Some Tumblr blogs are dedicated to sharing and discussing fanfictions. You might be able to find mikasa x armin fanfiction there. Look for blogs that are focused on the Attack on Titan fandom in general.