A common trope is the 'power - sharing' one. The male character and the symbiote share their unique powers, which helps them in various situations like fighting off enemies or solving mysteries. Also, the 'hidden feelings' trope is often used. The male character might be in denial about his growing feelings for the symbiote (or vice versa) which adds an element of romantic tension to the story.
To start writing Symbiote x male yaoi fanfiction, begin with creating a strong backstory for your characters. Why did the symbiote choose the male character? What are the male character's initial feelings towards the symbiote? Also, don't be afraid to explore the unique aspects of their relationship. For example, how does the symbiote's presence affect the male character's daily life? You can start with a simple scene, like the moment they first meet, and build from there.
To develop the human male character, think about his backstory. Perhaps he has a troubled family life or a past trauma that the symbiote either helps him overcome or makes worse. As for the symbiote, explore its motives. Is it just looking for a host to survive, or does it have a grander plan? You can also show how the symbiote changes the male's behavior over time, like making him more aggressive or more cautious.
Some common themes could be the struggle for control. The symbiote often has its own will, and when paired with a scientist, there's a battle between scientific curiosity and the dangerous nature of the symbiote. Another theme might be the exploration of new powers. The scientist could be studying the symbiote's abilities and how they can be harnessed or modified. Also, the relationship between the two can be a theme, like a reluctant partnership or a growing bond as they face challenges together.
Initially, the relationship could be rocky. Naruto, being used to his own way of life, might find it difficult to adjust to the presence of the fem symbiote. However, as the symbiote reveals its powers and shows that it can help Naruto in his struggle against neglect, they begin to form a connection. The symbiote may start to feel empathy for Naruto's situation, and Naruto may come to see the symbiote as a partner. As they face more and more difficulties together, such as fighting against those who still look down on Naruto, their relationship evolves into a deep and unbreakable bond of mutual understanding and support.
Friendship turning into love is also a very common theme. At first, Naruto and the male oc might be just comrades or friends, but as they spend more time together, they realize their feelings are deeper. This is often shown through shared adventures, where they protect each other and gradually fall in love.
Well, in these types of fanfictions, a frequent theme is the power dynamics between the characters. The seme is usually seen as the more dominant one, while the uke is more submissive. This power play can create interesting storylines. Additionally, themes like friendship turning into love are quite common. The uke and the seme might start as friends and then gradually develop romantic feelings for each other. There's also often a theme of self - discovery for the uke character as they figure out their own desires and feelings in the relationship.
One idea could be the symbiote giving the human male some extraordinary powers, like enhanced strength and agility. The male then has to learn to control these new abilities while hiding them from the world. Another plot could involve the symbiote having a mind of its own and conflicting with the male's moral code. For example, the symbiote might want to take revenge on someone who wronged it in the past, but the male is against violence.
One possible plot could be that Naruto, being neglected by the village, stumbles upon a fem symbiote. The symbiote bonds with him, sensing his loneliness and hidden power. Together, they start to train in secret. Naruto gradually learns to control the symbiote's powers, which are different from his chakra. As they grow stronger, Naruto decides to show the village what he can do with his new ally, proving that he's not someone to be neglected.
The scientist character can be developed through their research. Show their dedication to understanding the symbiote. For example, they could spend long hours in the lab, taking detailed notes. Their relationships also matter. If they have colleagues, show how they interact, maybe they keep secrets from them. And their reaction to the symbiote's influence is crucial. Do they resist it or give in a little bit each time?