Ayato in Diabolik Lovers is often portrayed as confident and somewhat possessive. In Ayato x Reader fanfictions, his character traits are usually amplified. He's shown to be highly attracted to the reader and will go to great lengths to keep them close. His vampire nature also adds an element of danger, as he may struggle with his blood - thirsty instincts while being in love with the reader.
The theme of friendship is also quite prevalent. Even if the fanfic doesn't focus on a romantic relationship, their friendship can be a strong element. They can support each other through difficult times, like when Aether is facing challenges in Inazuma and Ayaka offers her help. Or when Ayaka has to deal with political or family matters, Aether can be there as a true friend.
Ayato would likely become more possessive. Since Yui is carrying his child, he would see her as even more precious and something that belongs solely to him. He might be more affectionate in his own rough way, like constantly checking on her and being more touch - sensitive.
In the manga, Ayato survives his encounters with Kaneki. The story doesn't have Ayato being killed by Kaneki. Their interactions are part of the complex plot but not resulting in Ayato's death.
Sure. You can try looking on Archive of Our Own (AO3). There are often many well - written 'ayaka x aether' fanfics there. Just search for the tags related to them and you'll find a variety of stories with different themes and styles.
One common theme is the power of love. Ayato and Yui often find themselves in difficult situations, but their love for each other gives them the strength to face challenges. Another theme is self - discovery. As they interact, they learn more about themselves.
The main characters are Ayato and Yui. Ayato is likely to be a strong and sometimes stubborn character, while Yui is probably more gentle and kind - hearted. And of course, there's the baby which is a central part of the story as well.
Well, perhaps in the fanfic, Ayato might see Yui getting close to another character, like a new vampire in their group. This makes him jealous as he has feelings for Yui. He starts acting more possessive, trying to keep Yui away from the new guy. Yui, on the other hand, might get jealous if she sees Ayato spending a lot of time with a female vampire who has a crush on him. She could start to doubt Ayato's feelings for her.