Common themes in Handa x Yaoi fanfiction are numerous. There is often the theme of emotional vulnerability. The characters may open up to each other in ways they haven't with others, revealing their insecurities and hopes. Another theme is the idea of acceptance, not just within the relationship but also from the surrounding characters or society. Some fanfictions might also explore the theme of sacrifice, where one character is willing to give up something for the sake of the relationship. Moreover, the theme of new beginnings can be present, as the relationship gives the characters a fresh start or a new perspective on their lives.
I'm sorry, I don't have a specific list of Handa x Yaoi fanfiction to recommend directly. But you can try searching on popular fanfiction platforms like Archive of Our Own. They usually have a wide variety of fanfictions in different categories, and you might be able to find some great Handa x Yaoi ones there.
One common theme is the exploration of the complex relationship between Hannibal and Will. Their psychological connection is often delved into deeper in these fanfictions, with the yaoi aspect adding an extra layer of emotional and physical intimacy.
One common theme could be the exploration of the complex relationship between the two characters. Another might be the power dynamics.
One common theme could be the exploration of their relationship in a more intimate and emotional way. Maybe the fanfiction focuses on how they understand and support each other on a deeper level.
The theme of mutual understanding also prevails. Naruto and Itachi come from different generations and have had very different experiences. In the yaoi fanfiction, they learn to understand each other on a deep level. They share their pain, their dreams, and their fears, which helps in strengthening their bond. This is often shown through long conversations and shared moments of vulnerability.
In this type of fanfiction, the exploration of the human psyche beneath the masks is a big theme. Batman and the villains all wear masks, literally and metaphorically. In a yaoi context, they start to strip away those masks for each other. There's also the theme of sacrifice. Batman might be willing to sacrifice his principles a bit for the villain he has feelings for, and vice versa. This adds a lot of depth and drama to the stories. And of course, the theme of attraction between two very different personalities, which is what makes yaoi - inspired fictions so interesting in general.
The theme of sacrifice could also be present. Both characters are willing to sacrifice for their causes. In the context of a yaoi fanfiction, this could translate into sacrifices for each other. For example, Pain might sacrifice his original plans for world domination for Kakashi, or Kakashi might put his village - related duties on hold to be with Pain, exploring the lengths they would go for their relationship.
One common theme is the exploration of their deep emotional connection. Since they are often portrayed as having a strong bond in the original work, fanfiction may delve deeper into how that bond could develop into a romantic or more intimate relationship in a Yaoi context.
One common theme is the struggle with their identities. Both Sirius and Remus have complex identities, and in yaoi fanfiction, it often explores how they come to terms with their feelings for each other while dealing with being a werewolf (Remus) and a rebel (Sirius).
A common theme is the exploration of their relationship's development. It could start from a friendship - like bond and gradually turn into something more romantic.