One idea could be that Mikey and Shinigami team up to solve a mystery in the sewers that involves some strange magical creatures. They use Mikey's fun - loving nature and Shinigami's magic skills to figure things out.
A plot could involve Mikey getting into trouble with some bad guys while Shinigami is away on a mission. When she returns, she has to rescue him and in the process, they discover a new power that they can use together. Shinigami could teach Mikey some basic magic to help him in a fight. Mikey, being the quick - learner he is, uses it in a creative way that surprises both of them.
They could develop their relationship through shared adventures. For example, when they go on a quest to find a lost artifact. During the journey, they face many difficulties. Mikey makes Shinigami laugh with his silly jokes in tough situations, and Shinigami protects Mikey when he gets in over his head. This way, their friendship deepens into a more trusting and closer relationship.
One interesting plot could be baby Mikey and Donnie getting lost in the sewers while exploring on their own. They have to use their wits and the little skills they've learned to find their way back to their brothers.
One idea could be that the Turtles from 2003 get transported to the 2012 universe and they have to deal with the different versions of their enemies. For example, the Shredder in the 2012 version might have some new powers or tactics that the 2003 Turtles aren't used to.
A possible plot is that an ancient evil that was sealed away in the 2003 universe is accidentally awakened by the arrival of the 2012 turtles. The 2003 turtles initially blame the 2012 ones but then realize they need to work together. They combine their strengths, with the 2012 turtles' modern thinking and the 2003 turtles' deep knowledge of ancient ninja lore, to defeat the evil.
One idea could be that the Turtles from 1987 end up in the 2003 universe and have to adapt to the darker and more serious tone. They could team up with the 2003 Turtles to fight a common enemy like the Shredder. The 1987 Turtles' more light - hearted and comical ways might initially clash with the 2003 Turtles' brooding nature, but they eventually learn from each other.
In many 'TMNT Mikey hurt' fanfictions, a common plot element is Mikey's own attitude towards his injury. Sometimes he tries to be brave and not show how much pain he's in to not worry his brothers. Another element is the search for a cure or solution. If he's poisoned, they'll look for an antidote. If it's a physical wound, they'll try to find medical supplies or a way to heal it. And there's usually a lot of brotherly bonding as they take care of Mikey.
Well, it's interesting because it takes two beloved characters from the Teenage Mutant Ninja Turtles franchise and explores a different kind of connection. In the original series, their relationship is mainly platonic. But in fanfiction, writers can play with different scenarios. They can put them in situations where they have to rely on each other more, and that can lead to a deeper emotional bond that we don't usually see in the official storylines. Also, the different interpretations of how their relationship could develop add to the allure. Some might write it as a slow - burn romance, while others might have them realize their feelings more suddenly.
One idea could be a crossover where the shinigami from Bleach enter the world of a gamer. For example, Ichigo could find himself in a virtual reality game world, and his shinigami powers would work in unexpected ways. Maybe his zanpakuto would have different abilities in the game, like being able to cut through digital barriers.
Well, for a Naruto and female shinigami fanfiction, a plot could involve a female shinigami who is an outcast in her own realm because she believes in a different way of handling souls. She crosses into the Naruto universe and meets Naruto. They bond over their shared experiences of being different. Naruto could learn about the afterlife and the concept of souls from her. And she could learn about chakra and the ninja way. Also, perhaps there's a dark force in the Naruto world that is related to a corrupted form of soul - handling, and the female shinigami's knowledge helps Naruto combat it.
One idea could be a crossover where the Naruto characters interact with the Shinigami captains in a battle against a common enemy. For example, Naruto's unique jutsu combined with a Shinigami captain's zanpakuto abilities would make for some epic fight scenes.