In some fanfictions, Yui develops more agency. Instead of just being a passive victim, she starts to fight back against the vampires in a more strategic way. For instance, she might learn how to use their weaknesses against them.
Often in fanfiction, Yui's character development is centered around her self - discovery. She realizes that she has more to offer than just being a blood source. She may discover hidden talents or powers within herself that not only help her survive among the vampires but also make her a more independent and confident character. This could involve her learning about her family's connection to the vampire world in a way she never knew before, which gives her new insights and the ability to stand up for herself.
Ayato's character may develop by becoming more self - aware. Initially, he might be more impulsive and focused on his own desires, especially in relation to Yui. But as the story unfolds, he could start to understand the consequences of his actions on Yui. For example, he may realize that his possessiveness is causing her distress. This self - awareness could lead to a change in his behavior towards her, becoming more considerate at times.
She would likely have enhanced senses. Her vision could become sharper, allowing her to see in the dark like the other vampires. Her sense of smell might also improve, which could help her detect the presence of other vampires or even humans from a distance. This could change the power dynamics in the relationships she has with the vampire boys in the story.
In some fanfictions, Yui might form an unexpected alliance with a vampire who has been an outcast among the others. This vampire could teach Yui more about their kind, and together they try to change the power dynamics within the vampire household. They might start by uncovering secrets about the origins of the vampires' thirst for Yui's blood, which could lead to a new understanding and a different kind of relationship between Yui and the vampires.
Her relationship with the Sakamaki brothers would become more complex. They might see her as both a threat and an equal now. Before, she was just a human for them to toy with, but as a vampire, she could challenge their dominance.
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.
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.
Show their differences and how they complement each other. The female OC might be more bold and outspoken, while Yui is more reserved. The OC can encourage Yui to stand up for herself more, and Yui can teach the OC about the subtleties of dealing with the vampires. Their different personalities can create an interesting dynamic in the fanfic and help develop their relationship.
After the kiss, their relationship could become more intense. Ayato might become more protective of Yui, not wanting any of the other vampires to come near her. Yui could start to feel a deeper connection to Ayato and be more willing to open up to him about her feelings.
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.
In Diabolik Lovers, Yui and Ayato have a complex relationship. Ayato is often possessive towards Yui. Their relationship could develop in many ways in fanfiction. For example, they might start to understand each other's past traumas and grow closer through shared experiences. Maybe Ayato realizes the importance of respecting Yui's feelings rather than just being domineering.