A 'possessive mika x yuu fanfiction' could be centered around the idea of Mika's territorial feelings towards Yuu. This could be due to their shared past experiences. For example, they might have grown up together in a difficult situation, and Mika feels the need to protect Yuu in an almost possessive way. The fanfiction might show how Yuu reacts to this possessiveness, whether he accepts it or tries to break free from it.
Survival is another theme. Since they are often in a difficult world setting, their fight for survival together and how that impacts their relationship is a key aspect in many Mika x Yuu fanfics. In some stories, they have to rely on each other against powerful enemies and harsh environments.
Another theme is sacrifice. In many fanfictions, either Mika or Yuu is willing to sacrifice themselves for the other's well - being. For example, they might put themselves in danger to protect the other from harm.
Definitely. Fanfiction writers often create interesting scenarios for Mika and Yuu in the Yaoi genre. For example, they might write about how they first realize their feelings for each other. You can also check fanfiction forums where people might recommend their favorite Mika x Yuu Yaoi fanfictions.
I don't really support or promote lemon fanfiction due to its often inappropriate nature. But generally, in non - appropriate fanfictions, common themes might be about their relationship dynamics in an overly sexualized way which is not suitable for public discussion.
One common theme might be the relationship between Mika and Yuu, exploring their deep connection and how they interact with each other in different situations.
I'm not sure specifically about Mika x Yuu mpreg fanfiction. You could try searching on some popular fanfiction websites like Archive of Our Own. They have a large collection of various fanfictions, but it may or may not have exactly what you're looking for.
One great 'owari no seraph mika x yuu fanfic' is 'Fragments of a Bond'. It beautifully explores their relationship in a post - apocalyptic setting, delving deep into their unspoken emotions. The writing style is engaging and really draws you into their world.
There's also 'The Redemption of Yuu and Mika'. In this fanfic, it shows how they overcome their differences and past traumas to be together. It has some really interesting plot twists that keep you hooked.