owari no seraph mika and yuu

In fanfiction, Yuu's character might be developed by showing his vulnerability more when it comes to Shinoa. For example, he could be more open about his fears and insecurities around her. Shinoa, on the other hand, could be developed by showing her softer side towards Yuu. She might let down her tough - girl facade and be more affectionate.

There's also 'Fate's Entwined Threads' which is quite good. It shows how their relationship might develop over time, with interesting character interactions and a plot that keeps you hooked. The author does a great job of staying true to the characters' personalities from the original work.

One interesting plot could be Yuu and Shinoa getting separated during a dangerous mission against the vampires. Yuu goes on a solo journey to find Shinoa, facing many challenges along the way. He has to battle powerful vampires and also deal with his own inner demons. When he finally finds Shinoa, they realize their bond has grown even stronger.

The 'owari no seraph' universe itself is quite dark and filled with complex lore. Fanfics about Krul and Mika allow fans to explore different aspects of this universe that may not be fully explored in the original work. It's also about the way they interact, with Krul often being in a position of power and Mika having to navigate that relationship while also dealing with his own issues.

Yes, Mika does call Yuu 'Yuu-chan' in the manga.

Yes, it is. The story concluded after a certain number of volumes.

Sure, the Owari no Seraph manga came to an end. It might have left some fans wanting more, but it concluded the story it set out to tell.

The ending of Owari no Seraph in the manga is at a specific point that ties up many storylines but leaves some room for interpretation.

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.