Mikasa could also get hurt while exploring an unknown area. She might encounter some dangerous traps or wild animals that are not Titans but still pose a threat to her.
Another way is through a training accident. Maybe a new training method goes wrong and she gets injured, which then affects her confidence and ability to fight in future battles.
She could be hurt in a surprise attack by Titans. For example, a Titan that can camouflage might ambush her when she least expects it.
One possible fanfiction could be where Mikasa gets hurt during a battle against a new type of Titan. She might be separated from Eren and Armin, and in her attempt to fight alone, she underestimates the Titan's power and gets seriously injured. Her comrades then have to rush to her rescue.
A great plot for such a fanfic could be that Mikasa's Titan form is a result of a connection to an ancient Titan power. As she becomes a Titan, she starts to have visions of the past, of how the Titans came to be. She then decides to use this knowledge and her new form to try and end the Titan - human conflict once and for all. Along the way, she has to face her friends who are initially scared of her but eventually come to accept her new form as she proves that she is still the same Mikasa deep down, just in a different body.
Another scenario could be that Mikasa is kidnapped by a group who wants to use her as a bargaining chip against the military. They might demand a large amount of resources or the release of certain prisoners. Meanwhile, Mikasa, being the strong - willed character she is, would be constantly looking for a way to escape. She'd use her combat skills and intelligence to try and outwit her captors at every turn.
One possible plot could be them having to protect their new family from any remaining Titan threats. They would use their skills and knowledge to keep their loved ones safe.
One possible fanfic could be about Mikasa's transformation into a Titan being a unique situation in the 'Attack on Titan' world. Maybe she has different abilities compared to other Titans. For example, she could retain more of her human consciousness and use her combat skills in Titan form. This would create an interesting dynamic as she tries to protect her friends while being a Titan, which is usually seen as an enemy.
There are many great fanfictions about Sasha and Mikasa. Some might focus on their friendship within the Survey Corps. They could be shown having heart - to - heart conversations during their down time, sharing their fears and hopes. Maybe they bond over their love for a certain food, like Sasha's love for meat and Mikasa's simple pleasures in the scarce good food they get.
The kiss could signify a new beginning for them. It might represent a break from the constant fighting and a step towards a more personal and emotional connection. In fanfiction, it often gives readers a sense of hope and a different perspective on their relationship compared to the often - tragic main story.
In some fanfics where Mikasa dies in Attack on Titan, it could lead to a major shift in Eren's character development. He might lose his last tether to his humanity and spiral into an even darker path. Her death could also cause Armin to become more determined in the fight against the Titans, as he would be driven by the loss of his dear friend.
There could be a fanfiction where Mikasa and Sasha have to survive in an area cut off from the main group. In this story, they would need to find food and shelter while also fending off Titans. Their different personalities, with Mikasa being more stoic and Sasha more carefree, would create a great dynamic as they face challenges together.
The idea of Eren and Mikasa teaming up against different threats in new scenarios is also quite popular. It could be against new Titans or other human enemies. Some fanfictions also focus on their backstories, expanding on their childhood and how it shaped their relationship. For instance, a story might explore more about the time when they first met and how that influenced their bond as they grew up.