One good place to start looking for such fanfiction is on Archive of Our Own (AO3). There are often many well - written stories there about various relationships, including ones involving Yui and Subaru. Just search for 'yui and subaru kiss' in the search bar, and you'll be presented with a list of relevant fanfictions.
Another option is to join fan communities or forums dedicated to the series that Yui and Subaru are from. There, you can ask other fans if they know of any great fanfictions that include a kiss between the two characters. Fans are usually very helpful in sharing their favorite reads within these communities.
Some fanfiction platforms might have tags specifically for 'yui and subaru kiss'. For example, FanFiction.net could potentially have these types of stories. You can explore the anime or manga sections related to the characters and then look for stories with that specific romantic moment in the description or tags.
There's a fanfiction titled 'Subaru and Yui: A New Beginning'. In this story, Subaru and Yui find themselves in a completely new environment, away from their usual settings. They have to adapt and in the process, their relationship deepens. It has really interesting character development and a great plot that keeps you hooked from start to finish.
You could also try Wattpad. There are many talented writers on there who write fanfiction. Search for 'yui and subaru kiss' and then go through the results. Check the author's profile to see if they have a history of writing good stories. Sometimes, new and upcoming writers can also produce really great content.
There might be a fanfiction where Yui gets lost in a strange part of the vampire realm and Subaru is the only one who can find her. He battles his own inner demons as well as the external threats to rescue her. This story would show Subaru's protective side towards Yui.
One common theme is friendship. Since Subaru and Yui are often depicted as friends in the original works, fanfictions tend to explore different aspects of their friendship, like how they support each other through tough times.
I'm not sure specifically about a 'Subaru and Yui pregnant' fanfiction. You could try searching on fanfiction - specific websites like Archive of Our Own or FanFiction.net. They have a vast collection of fan - made stories, and you might be able to find something related there.
Well, perhaps in the fanfiction, Subaru and Yui have been trying for a while to have a baby. When they finally find out Yui is pregnant, they are overjoyed. But then they face challenges like financial difficulties as they prepare for the baby. Or there could be some sort of mystery or danger that threatens the pregnancy, and they have to fight to keep the baby safe.
One popular subaru sakamaki x yui fanfiction is 'A Chance Encounter'. It beautifully portrays their relationship with Subaru's brooding nature and Yui's gentle kindness interacting in an interesting way. The story has a lot of emotional depth and the author does a great job of building up the tension between the two characters.
Another interesting plot could be that Yui gets sick, and Subaru is the only one who can take care of her. He has to overcome his own insecurities and fears to be there for her. He might learn more about himself and his feelings for Yui during this time. As he nurses her back to health, their relationship deepens in a more tender and emotional way.
Love and redemption are common themes. Subaru often has a troubled past, and through his relationship with Yui, he finds a sense of redemption. Yui's love helps him heal. For example, in many stories, Subaru's initial coldness melts away because of Yui's unconditional love.
You can start by looking on fanfiction.net. It has a large collection of fan - created stories for various fandoms, including Diabolik Lovers. Just use the search function and type in 'Diabolik Lovers Yui and Subaru' to find relevant stories.