One common theme is loyalty. Mikami's unwavering loyalty to Light is often explored in different ways, like how far he would go to protect Light's plans. Another theme is power dynamics. Since Light has a certain hold over Mikami, fanfictions often play with this aspect.
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.
One popular 'Light x Mikami' fanfiction is 'The Unseen Bond'. It delves into their complex relationship and how they might interact in different scenarios not shown in the original work. It's really interesting to see the author's take on their dynamic.
A very prevalent theme in 'Light Yagami x Reader fanfiction' is the idea of trust. Given Light's secretive nature, the fanfictions show how the reader character tries to gain his trust or vice versa. Also, the theme of manipulation is common. Light is a master manipulator in the original series, and in the fanfictions, this aspect is often explored in relation to the reader. For example, in some stories, Light might try to use the reader for his own ends. Additionally, there's the theme of redemption in some fanfictions, where the reader tries to 'save' Light from his dark path.
Some fanfictions have a plot twist where Misa loses her Shinigami eyes in a way that wasn't in the original. This could make her more vulnerable, and Light has to decide whether to continue using her or actually start to care for her in a more genuine way. It also adds a new layer of danger as she no longer has that advantage, and their enemies may target her more easily.
One common theme is power dynamics. Light is often portrayed as having a dominant role, given his intelligence and the way he manipulates situations in the original story. Mikami, on the other hand, is shown as being more submissive to Light's will.
In a great Light Yagami x Male OC fanfiction, the plot is crucial. It should be engaging and not just revolve around the relationship. Maybe it could involve the male OC getting caught up in Light's Kira - related activities. The dialogue should be realistic, showing the different personalities of both characters. Also, the fanfiction should stay true to the Death Note universe in terms of rules and the general atmosphere. For instance, if the male OC discovers Light's secret, how he reacts should be in line with what we know about the world of Death Note.
A lot of the well - written non - lemon 'Light Yagami x Reader' fanfictions are those that build a slow - burn relationship. For example, there are stories where the reader is a new student at Light's school and they gradually form a bond over shared interests in justice or intellectual pursuits. These stories often focus on character development and the complex nature of Light's personality.
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.
Another place to look could be FanFiction.net. However, the content there might be a bit more spread out. You'll need to use the search function and specifically look for works related to Light and Mikami in the yaoi genre. Keep in mind that the quality can vary greatly from one story to another.