Well, transformation is a common theme. The female werewolf's transformation can be a source of both fear and fascination for the male reader. It represents the duality of her nature. Another theme is loyalty. In these stories, loyalty between the male reader and the female werewolf is often tested. Whether it's loyalty to each other or loyalty to their respective groups (human or werewolf). There's also the theme of destiny. Many stories imply that the male reader and the female werewolf are fated to be together, despite all the obstacles in their path.
One common theme is the discovery of the unknown. The male reader often starts off not knowing much about werewolves and then gradually learns about their culture, powers, and way of life. Another theme is the power of love that overcomes differences. Since the male is human (usually) and the female is a werewolf, their relationship has to deal with the big difference between their species.
In werewolf x male reader fanfiction, the theme of transformation is often seen. This could be the werewolf's physical transformation or a more metaphorical transformation of the male reader's character as he gets involved with the werewolf. There are also themes related to loyalty, as the relationship between the two characters deepens and they become loyal to each other in the face of various difficulties.
One common theme is the discovery of the werewolf world. The reader - insert character often stumbles upon the existence of werewolves and has to come to terms with this new reality. Another theme is the protection aspect. The werewolf usually takes on the role of protecting the reader from various threats, whether it be other supernatural beings or just the dangers of the werewolf world itself.
One common theme is the struggle between different worlds. Draco from the wizarding world and the male werewolf reader from a more primal world. There's often a lot of tension due to their different natures. Another theme could be acceptance. Draco might have to accept the werewolf side of the reader, and the reader might have to accept Draco's pure - blood wizard ways.
One common theme is the struggle between the werewolf nature and human nature. The female werewolf might be torn between her wild instincts and her feelings for the male human reader.
In loki x werewolf reader fanfiction, the theme of identity is quite common. The werewolf reader is often struggling with their dual identity as a human and a werewolf, and Loki, who has his own issues with his identity as a god and an outcast in a way, can relate to that on some level. The theme of loyalty also pops up. They have to decide whether to be loyal to their own kind or to each other. And the theme of mystery is there too. Loki is a mysterious character, and the werewolf reader also has their own secrets related to their werewolf nature, and as the story unfolds, these mysteries are gradually revealed.
One common theme is the struggle between Superman's heroic nature and his werewolf side. It often creates internal conflict within the character. Another theme could be the relationship dynamic between the reader (who is usually an ordinary human) and Superman in his werewolf form, like a forbidden love or a protective relationship.
A lot of these fanfictions have a theme of acceptance. The female werewolf reader may be worried about Spinel accepting her true nature. And Spinel, in turn, might have her own insecurities that the reader has to deal with. So, it's about them accepting each other fully. There could also be themes of adventure, like the two going on adventures together in a world where werewolves exist. Maybe they are on a quest to find a cure for the werewolf curse (if it's seen as a curse in the story) or they are fighting against those who want to harm werewolves.
Often, there's a theme of secrecy. The werewolf in the Attack on Titan universe may need to keep their identity a secret for various reasons. Maybe they're afraid of being hunted by the military or being seen as a threat by other characters. There's also the theme of transformation. How does the werewolf transform? Does it happen at will or is it triggered by certain events, like the presence of Titans? And this transformation can play a big role in the plot, especially in action - filled or suspenseful scenes. In addition, themes of loyalty and betrayal can be explored. Is the werewolf loyal to the Survey Corps or does their own kind have other plans?
Self - discovery is another theme. The male reader may change and grow through his interactions with the female character. He might discover new aspects of his personality or find a new purpose in life because of her.
Love and romance are very common themes. It's about the relationship development between the male character and the female reader - character. Another theme is adventure, where they go on exciting journeys together.