Maybe he has some misunderstandings or she did something that really upset him.
The man might hate his wife because of her past actions that he can't forgive. Maybe she betrayed his trust or didn't support him when he needed it the most.
Maybe he has some misunderstandings or conflicts with her that build up over time.
Maybe it's because of the plot. If it's confusing or doesn't make sense, people could hate it.
It's quite unlikely. In most manga, gender identities are usually clear and consistent.
It's moderately popular. Some people really enjoy its unique plot and character development.
Maybe he finds it cold and inconvenient. Snow can make traveling and doing outdoor activities tough for him.
Maybe he had a bad experience with cats in the past, like getting scratched or something.
Maybe it's to explore different kinds of relationships and create a thought-provoking story. It might also be a way to attract readers with a bold and unexpected concept.
Honestly, it's hard to say. 'My wife is a man' doesn't typically have a direct relation to manga. Maybe it could be in some very unique and unconventional story, but that would be quite rare.
It could be a creative twist or a symbolic representation. Maybe the author is trying to challenge conventional gender roles.
Maybe he feels threatened by the romantic ideals in those novels. He might think his wife will compare their relationship to the fictional ones and find it lacking.