Well, the 'demon x reader' fanfics often have the trope of the 'accidental summoning'. The reader, usually a human, accidentally summons the demon, and from there, their relationship begins. There's also the 'soul - binding' trope, where the demon and the reader are somehow bound together, perhaps by a magical spell or a prophecy. This forces them to interact and often leads to the development of their relationship. Additionally, the 'demon mentor' trope is seen, where the demon teaches the reader about the supernatural world or some special powers that the reader may possess.
One common trope is the 'demon protector'. The demon takes on the role of guarding the reader from other threats in the story, whether they be other demons or some sort of dark magic. Another is the 'forbidden love' trope, as in the demon and the reader come from different worlds (human and demon) and their relationship is frowned upon by society in the fic's setting. And there's also the 'demon with a heart of gold' trope, where the demon may seem menacing at first but is actually kind - hearted deep down especially when it comes to the reader.
There's often the 'secret origin' trope. Maybe the reader's transformation is part of a bigger prophecy or some long - forgotten vampire ritual. And then there's the 'vampire mentor' trope, where an older, more experienced vampire helps the newly - turned reader navigate their new life, teaching them about hunting, hiding from sunlight, etc.
Well, 'Hidden Potential' is a big trope. A Senju character in fanfics may seem ordinary at first but then discovers they have some amazing hidden potential within them related to their Senju heritage. 'Senju and the Tailed Beasts' is also common. Fanfics might explore how a Senju could potentially bond with or control a tailed beast in a way different from what we've seen in the original Naruto story. There's also the 'Ancient Prophecy' trope, where a Senju is part of an ancient prophecy that dictates their actions and the future of the Naruto world.
There are quite a few. One common trope is the hero's journey, where the main character faces challenges and grows. Another is the presence of powerful villains that pose a significant threat.
A lot of these fanfics also use the 'unexpected kidnapper' trope. It could be someone who was thought to be an ally or a new, unknown enemy. This adds an element of surprise to the story. And there's often the trope of Ruby's friends having to overcome their own personal issues or insecurities in order to rescue her successfully.
A common trope is also the 'Outsider in a Strange World' for the reader. The reader is thrust into Sesshomaru's world, which is full of demons and magic. They have to adapt, and Sesshomaru often becomes their guide or protector in this new and dangerous environment. This trope allows for a lot of character development and relationship building between the two.
A typical trope in such fanfiction is the internal conflict. The reader - turned - monster has to deal with the duality of their new existence. They are still themselves in some ways but also have this monstrous side. There's also the idea of the mentor figure. Maybe an older, more experienced monster takes the newly - turned one under their wing to teach them how to survive in this new world. And sometimes, there's the trope of the hidden power within the monster form. The character discovers that they have a unique ability that sets them apart from other monsters, which can be a key element in the story.
A frequent trope is the 'fake dating' one. Maybe for some reason, Todoroki and the reader have to pretend to be a couple, perhaps to fool a villain or for a school event. As they pretend, they start to develop real feelings for each other. Also, the 'roommate' trope can be seen, where they end up living together either at the dorms or in some other situation, and that closeness leads to a romantic relationship.
The 'friends - to - lovers' trope is also quite popular in jongup x reader fanfic. They start as friends, sharing common interests or being part of the same group. As time passes, their feelings for each other grow deeper. There could be moments of jealousy when one of them gets close to someone else, which adds drama to the story. And sometimes there's the 'forbidden love' trope, like if jongup is from a different social class or has some sort of obligation that makes the relationship difficult.
Well, a typical trope is the 'discovery' trope. The reader usually discovers Herobrine in some unexpected way, like in an abandoned mine or a dark forest. Also, the 'mysterious allure' trope is common. Herobrine's mysterious nature draws the reader in, and they can't help but be intrigued by him. And there's often the 'transformation' trope too, where the reader might start to change or gain abilities after interacting with Herobrine.
The 'shared adventure' trope is also popular. Tracer and the reader embark on some exciting mission or journey together. During this time, they get to know each other better, and their relationship deepens. This could be anything from a stealth mission to retrieve some important Overwatch artifact to a journey through a strange and dangerous new area that has suddenly appeared in the Overwatch world.