I can't provide a novel about One Piece's male protagonist turning into a woman. One Piece was a manga and cartoon, and the plot had nothing to do with the gender of the characters. We should appreciate and respect the variety and richness of all works.
I recommend One Piece: The Prince Charming Strategy Guide. The male protagonist had transmigrated to the world of One Piece and accidentally tied himself to a popular male god strategy system. Facing the various male god targets selected by the fans, he silently shed tears. His kidneys hurt. The whole book told the story of the male protagonist conquering the male god, his strength soaring, and becoming the strongest male god. I'm recommending it to you. I hope you like my recommendation.
There is no such thing as Inuyasha becoming a woman in a novel because Inuyasha is a Japanese manga character and his image is usually depicted as a male. Although some novels and manga depicted Inuyasha as a female character, this was usually based on fictional plots or settings rather than his real gender.
The novel One Piece: RPG might meet your needs. The female protagonist transmigrated to the world of One Piece, and the male protagonist Hawkeye is one of the strongest characters in the RPG. The plot is more relaxed and lively. If you like this type of novel, you can give it a try. I hope you like this fairy's recommendation. Muah ~😗
😋I recommend One Piece: The Gender-Changing System. After the male protagonist accidentally obtains the gender-changing system, he can change into a female identity at any time. He has the identity of a super-righteous heroine and a big-breasted queen, two extremely special abilities. Other than that, he could also obtain various powerful skills and abilities through the system upgrade, such as weather control, ice control, teleportation, and so on. As the story developed, he also met different partners and enemies, and launched a series of thrilling adventures and battles. The total word count is about 500,000 words. I believe you will like this novel.
If the male lead turned into a woman at the end, then the name of this anime might be related to the " Women's Mountain Range." However, it was also possible that other names depended on the storyline and character setting of the male lead.
The information you provided is not specific enough to determine which movie you are referring to. If you can provide more context or specify the genre and name of the movie, I will be more than happy to provide you with a more accurate answer.
I'll recommend a novel to you. The title is " Quickly Wear It: The System Explodes, and the Male Lead Is Going Dark." This is a novel about time travel. The male lead turns into a woman after the system is destroyed. Although this book doesn't completely meet your requirements, it's still very interesting. I hope you like it.
I'm not sure which novel you're referring to. Can you provide more context or information so that I can better answer your question?
I recommend "Rhapsody of the Transformation Goddess." The male protagonist wakes up to become the goddess of the academy, and there's a scrubby man who looks at her with murderous intent. It's a farce story. I hope you like this fairy's recommendation. Muah ~😗