Yagami was the protagonist of the Japanese suspense manga Death Note. He was the son of the police chief, Night God Soichiro, and came from a wealthy family. In the manga, Yagami was portrayed as a perfectionist with a beautiful appearance, all-rounded sports, excellent acting skills, and strong psychological quality. He had superior intelligence and malice, and was considered a perverted criminal. Night God Moon's abilities included an excellent mind and a stable mind. He could design a plan to drive a wedge between the police and the enemy, and he could remain calm while processing a large amount of information. He pursued a new world without crime, believing that the world was decaying. Night Goddess Moon's personality and fate were deeply explored in the Death Note. He was a well-loved character because he represented the possibility of indulgence, but he also experienced many failures.
One aspect that could be explored in such fanfictions is the idea of dependence. Light depends on Ryuk for the use of the Death Note, at least in terms of understanding its full capabilities. Ryuk, on the other hand, depends on Light for entertainment. This mutual need could be the basis for a deeper, more emotional connection in the context of yaoi fanfiction, where feelings of love or at least a strong bond could develop in unexpected ways.
One common theme is friendship. Their meeting often leads to the start of a new friendship. Another theme could be discovery. They might discover new things about each other or about the world around them.
In many fanfictions about Light Yagami and Misa, their relationship is often complex. Light initially uses Misa for his own ends in the 'Death Note' story. He manipulates her feelings because of her Shinigami eyes which are useful for his plan to create a new world. Misa, on the other hand, is blindly in love with Light. In fanfiction, this dynamic can be explored in different ways. Some might show Misa slowly realizing she's being used, while others may focus on a more 'romanticized' version of their relationship where Light actually develops some real feelings for Misa.
Another place to check is Archive of Our Own. They have a wide range of fan - created content. In some 'haruka meets yagami fanfiction' on there, the authors might focus on the character development of both. For example, Haruka could be a shy character who becomes more confident through her interactions with Yagami, and Yagami could learn something new about himself as well.
I'm not sure specifically which 'Kazuma Yagami' in a light novel as the name is not widely known in extremely popular mainstream light novels. It could be a character from a relatively niche or new light novel series.
A theme that often pops up is the idea of companionship in an unlikely duo. Despite their differences, in many fanfics, they develop a strange sort of bond. It could be a grudging respect or a more complex emotional connection. Also, the theme of fate is explored as they are intertwined in this strange situation due to the Death Note.
The two main characters are Ryuk and Light. Ryuk is a Shinigami, a death god from the Shinigami realm. He drops the Death Note into the human world which Light Yagami finds. Light is a brilliant high - school student who becomes obsessed with using the Death Note to create a world free of crime by killing criminals.
One common theme is the power dynamic. Ryuk has his own power as a Shinigami and Light has the Death Note, so their relationship in fanfiction often explores who has the upper hand. Another theme could be the concept of morality. Light's actions are often questioned, and Ryuk's role in either enabling or stopping him can be a big part of the story.
Yes, there are some. You can try searching on fanfiction - dedicated websites. Some might be hidden in the depths of the net, but with a bit of digging, you can find interesting takes on their relationship within the yaoi genre.