Isolation is another theme. L is a very isolated character, and when an OC enters his world, it can either make that isolation worse or help him break out of it. This exploration of L's character through his relationship with the OC is a common and fascinating theme in these fanfictions. There are also often themes of mystery and the supernatural, as the Death Note itself is a supernatural element in the story.
One common theme is the battle of wits. Since Death Note is all about mind games, the OC often gets involved in trying to outthink Kira alongside L. Another theme is the development of an unexpected relationship. L is such an aloof character, so seeing how an OC can break through his barriers is a popular plot point.
Love in an unlikely situation is also a common theme. Given L's unusual personality and lifestyle, it's interesting to see how a relationship could develop between him and the reader - character. It's often a slow - building love, as L isn't the type to fall easily. Writers explore how love can grow in the midst of his high - pressure world of chasing Kira and solving complex crimes.
One common theme is the exploration of their intellectual rivalry turning into something more. Their constant mind games in the original series can be reimagined as a form of flirtation in yaoi fanfiction.
Well, in many 'Light x L Death Note Mate Fanfiction', a common theme is redemption. Light, who is a morally gray character in the original, often has a journey towards redemption in these fanfictions. Also, the theme of trust is very prevalent. Given their initial positions as enemies, building trust between Light and L is a major part of these stories. Additionally, there's the theme of facing external threats together, which forces them to rely on each other more and develop their relationship further.
One common theme is the clash of different worlds. For example, when L crosses over into a fantasy world, his scientific and logical mindset is at odds with the magic or other non - scientific elements of that world.
One common theme is the exploration of L's more private and emotional side. Since he's such a mysterious character in the original, fanfictions often delve into his feelings. Another theme could be the forbidden or secret relationships he might be in, which ties into the 'lemon' aspect, like a relationship with someone he shouldn't be involved with in the context of the Death Note world.
Another theme is the exploration of their personalities. Misa's bubbly and somewhat naïve nature contrasts with L's cold and calculating demeanor. Fanfictions often play with how these two personalities clash and sometimes, surprisingly, complement each other. For example, in some fanfics, Misa's unpredictability helps L in his investigations in unexpected ways.
One common theme is the exploration of L's hidden emotions. Since L is such an enigmatic character in the original, fanfictions often try to dig deeper into his feelings, especially when it comes to romantic or more intimate relationships. For example, his struggle between his logical mind and new - found emotional desires.
One common theme is the power struggle. Since Light has the Death Note, an OC in the story might struggle with his power and try to either gain control over it or limit it. Another theme is the moral dilemma. The OC may face the same moral questions as Light does regarding who should be judged and who has the right to decide life and death.
A frequent theme is the growth of the OC character. In these fanfictions, the OC often starts out as someone with certain traits and then, through their interactions with Near, they grow and change. For example, they might become more confident or gain a deeper understanding of the complex world of Death Note. Also, the theme of trust is quite common. As Near is a very guarded character, seeing how he comes to trust the OC and vice - versa is a theme that many writers explore.
A common theme is the struggle with power. When an oc gets the Death Note, they often face the same temptations as Light did, like the power to control life and death. Another theme is morality. They have to grapple with whether it's right to use the Death Note, especially when they see all the chaos it can cause.