Perhaps Yui becomes pregnant and it causes a rift between Ayato and some of his brothers. Ayato is determined to be a good father, but he has to fight against the traditional vampire ways that don't really support the idea of a half - vampire child. Yui, on the other hand, tries to bring the family together by showing them the positive side of their upcoming child. She could also start having strange dreams or premonitions related to the baby's future, which adds an element of mystery to the fanfiction.
One possible plot could be that Yui discovers she's pregnant and is filled with a mix of fear and joy. Ayato, initially shocked, then becomes overprotective. They might face challenges from the other vampire brothers who are either jealous or worried about the implications. Yui would have to deal with her changing body while also trying to fit into the dangerous vampire world. Ayato could struggle with his own vampire instincts and how to be a good father figure.
Well, perhaps in the fanfiction, Yui discovers she's pregnant and is filled with a range of emotions from joy to fear. Ayato, on the other hand, is excited in his own way as it's a sign of his dominance over Yui. The story could then focus on how they navigate the changes in their relationship, like Ayato having to be more responsible and Yui having to deal with the physical and emotional changes of pregnancy while living among vampires.
In a fanfiction, Yui and Ayato could go on an adventure together. They might find themselves in a mysterious part of the mansion that no one has explored before. As they face various challenges there, they have to rely on each other. Ayato, who is usually so self - assured, might start to see Yui in a new light as her bravery and determination shine through.
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 a fanfiction, it could be that Yui discovers she's pregnant. Ayato is both excited and scared. They start preparing for the baby's arrival. Yui tries to teach Ayato about normal human baby - rearing practices. But as the pregnancy progresses, strange things start to happen. Maybe the baby is having an effect on Yui's connection to the vampires. And they have to figure out how to deal with this new situation while also preparing for the new life that's about to enter their world.
Their relationship would become more intense. Ayato would likely be more possessive and protective of Yui. He'd be constantly by her side, fearing for her and the baby's safety. Yui would rely more on Ayato, and their bond would deepen as they face the new challenges together.
One possible scenario in a fanfiction could be that Ayato finally overcomes his more possessive and aggressive tendencies towards Yui. After a series of adventures and challenges within the Diabolik Lovers' world, they realize their deep love for each other. Ayato might propose to Yui in a very romantic way, perhaps in the garden where they often have their more tender moments. Their wedding could be a small, private affair with only the closest of friends and family (from what they consider family in that world). Yui would look stunning in a simple white dress, and Ayato would be in his finest attire. It would be a celebration of their love that has managed to bloom despite all the darkness around them.
Another way their interactions could be portrayed is through a series of misunderstandings. For instance, Ayato might misinterpret Yui's kindness towards another character as romantic interest. This would lead to some tension between them, but eventually, through communication, they would clear up the misunderstandings and their relationship would reach a new level.
One possible aspect of a Yui x Ayato lemon fanfiction could be the exploration of their complex relationship. In the Diabolik Lovers universe, Yui is often in a vulnerable position while Ayato has his own domineering nature. A fanfiction might delve into how their relationship evolves in a more romantic and steamy way, with the 'lemon' aspect adding an element of passion. It could show Yui gradually coming to terms with her feelings for Ayato despite the difficult circumstances they are in.
One possible aspect of this fanfiction could be the exploration of the complex relationship between Ayato and Yui. In many Diabolik Lovers stories, Ayato is often possessive and Yui is the more submissive figure. In a lemon fanfiction, this dynamic could be intensified in an intimate way. Maybe it shows how Ayato's vampiric nature affects their relationship during these more passionate moments. However, it's important to note that such fanfictions should still adhere to the general themes and boundaries set by the original Diabolik Lovers universe.
One common theme is the transformation of Ayato's character. Usually, he is seen as quite a brash and self - centered character in the original series. But in pregnancy fanfics, he often becomes more responsible and caring. Another theme is the fear and anticipation that Yui experiences. She is in a strange world filled with vampires, and having a child adds a whole new layer of complexity.