One common theme could be self - discovery. As the girls transform into werewolves, they often have to come to terms with their new identity, which can be a journey of self - exploration. Another theme might be friendship. The three girls could support each other through their transformation experiences, facing the challenges together.
Common themes in such fanfics may include the struggle against the werewolf nature. The girls may have to learn to control their new instincts, like the urge to hunt. Also, there could be a theme of secrecy. They might need to keep their transformation a secret from the outside world, which adds an element of mystery and danger. Additionally, themes of power and empowerment can be present. As werewolves, they gain new physical and perhaps mental powers, and how they use these powers can be a major part of the story.
The theme of acceptance is also prevalent. This can be acceptance from her family, friends, or society. In some fanfics, werewolves are shunned, so the female werewolf has to fight for acceptance. It can also be self - acceptance, like coming to terms with her more wild and primal side.
I'm not sure of a specific 'three girls werewolf transformation fanfic' off - hand. But you can try searching on fanfiction platforms like Archive of Our Own. They have a vast collection of fan - created works and you might be able to find what you're looking for by using relevant keywords in their search bar.
Another theme is the connection to nature. Since werewolves are often associated with the moon and the wild, these stories usually explore how the girl's transformation affects her relationship with nature. She might feel a stronger pull towards the forest during the full moon, for instance.
A common theme is the loss of control. When a woman transforms into a werewolf, she loses her human self - control and gives in to her more primal instincts. Another is the idea of the dual nature. Just like in real life women may have different sides to their personalities, the werewolf transformation emphasizes this duality - the civilized woman and the wild, beastly werewolf.
Isolation is another theme. Gay werewolves may feel isolated not only because of their lycanthropy but also because of their sexual orientation. They might be ostracized by the werewolf pack or the human society they live in. The transformation can sometimes intensify this feeling of isolation, as they become something that is even more 'different'.
One common theme is the struggle between human and animal instincts. In these stories, as the character transforms into a werewolf, they often face a battle within themselves regarding their newfound primal desires. Another theme can be the allure of the unknown and the forbidden. The transformation into a werewolf is something not normal in society, and the erotic aspect can add to that sense of the forbidden. Also, themes of power and dominance might be present. Werewolves are often depicted as powerful creatures, and this power can be intertwined with sexual power in erotic werewolf transformation stories.
Romance is a very common theme. Werewolves often fall in love with humans or other supernatural beings. Another theme is loyalty, as werewolves are usually very loyal to their pack. Also, the struggle between their animal instincts and their human side is often explored.
One common theme is leadership. The alpha werewolf often has to lead his pack through various difficulties like battles or dealing with other supernatural beings. Another theme is loyalty, both within the pack and towards the alpha's mate. For example, in many fanfics, pack members will risk their lives for the alpha.
Friendship is also a big theme. Harry's friends play an important role in many of these fanfics. They might help him hide his werewolf identity, or they could be the ones to encourage him to embrace it. Their friendship is tested and strengthened through the werewolf - related events in the story.
One common theme is the idea of fated mates. It's often that werewolves in these fanfics have a destined partner, and they can sense this connection on a deep, almost instinctual level.