After reading several stories of the genre I have found several details that the authors do not take into account. They are mostly things that happen in Japanese novels.
1. Language: Typically, you go to a different world where a different language is spoken, but for some reason they have the same grammatical rules as your original language, or at least that's the most logical conclusion you can think of.
In most Japanese stories the protagonist still uses "honorifics" or the "formal way of speaking" and it seems that no one in that world; I repeat, he uses a different language, it seems strange to him that someone adds letters to the end of his name or sentence. Moreover, the same natives seem to follow the same customs of the language. The only way I see this being halfway justified is if they have an ability called "translation" or something similar. But in many cases the protagonist learns the language from scratch so it really is strange.
2. Only Japanese?: In several stories where there are several individuals who go to other worlds or in the story you mention that there were more people as the protagonist, for some reason they are all Japanese. Until now I have not heard of another nationality in these kinds of stories.
3. Food: The Japanese seem to love their food to the point of having to replicate it in a different world, but it's just too unnatural for all of Earth's plants to come into existence in the other world, after all so many of them have been created Through artificial selection, even if the same plant were to exist it would probably be a degraded or primitive version of it.
It is also quite strange that the natives find it the most delicious food they have ever eaten.
According to my own research on the best restaurants and best cuisines, Japan is not among the first.
4. Medieval or modern: For some strange reason you find yourself in a different world that seems to be set in the middle ages, but for some reason they look clean, they wear decent clothes, the place does not stink and they have objects that do the same functions as the that we use in the contemporary age. The reality is that in the middle ages commoners looked like homeless people, the streets are full of excrement from both people and animals, the houses are made of wood, the floor is dirt, no urban planning and of course let's not forget of the medicine made of mixing things at random or the lack of hygienic care of people.
Believe me when I tell you that a tramp today has better living conditions than a commoner in the middle ages.
5. Inventory: There is always the typical storage or inventory ability that only allows you to put non-living things inside and also freezes time.
The reality is that the function of stopping time is unnecessary, after all the decomposition arises from fungi or microorganisms that travel through the air, if the ability does not allow living beings to enter then they will not be able to decompose them. Although there are some that break down by chemical reactions, but they are not really abundant. The same is for objects that are eroded by air or water, if the ability only lets in the specified object then it will remain intact. This is what is normally known as void sealing, the thing is that the ability is an absolute void.
These are the ones that come to mind for now, but you are free to comment further on the subject.
1. Language: Typically, you go to a different world where a different language is spoken, but for some reason they have the same grammatical rules as your original language, or at least that's the most logical conclusion you can think of.
In most Japanese stories the protagonist still uses "honorifics" or the "formal way of speaking" and it seems that no one in that world; I repeat, he uses a different language, it seems strange to him that someone adds letters to the end of his name or sentence. Moreover, the same natives seem to follow the same customs of the language. The only way I see this being halfway justified is if they have an ability called "translation" or something similar. But in many cases the protagonist learns the language from scratch so it really is strange.
2. Only Japanese?: In several stories where there are several individuals who go to other worlds or in the story you mention that there were more people as the protagonist, for some reason they are all Japanese. Until now I have not heard of another nationality in these kinds of stories.
3. Food: The Japanese seem to love their food to the point of having to replicate it in a different world, but it's just too unnatural for all of Earth's plants to come into existence in the other world, after all so many of them have been created Through artificial selection, even if the same plant were to exist it would probably be a degraded or primitive version of it.
It is also quite strange that the natives find it the most delicious food they have ever eaten.
According to my own research on the best restaurants and best cuisines, Japan is not among the first.
4. Medieval or modern: For some strange reason you find yourself in a different world that seems to be set in the middle ages, but for some reason they look clean, they wear decent clothes, the place does not stink and they have objects that do the same functions as the that we use in the contemporary age. The reality is that in the middle ages commoners looked like homeless people, the streets are full of excrement from both people and animals, the houses are made of wood, the floor is dirt, no urban planning and of course let's not forget of the medicine made of mixing things at random or the lack of hygienic care of people.
Believe me when I tell you that a tramp today has better living conditions than a commoner in the middle ages.
5. Inventory: There is always the typical storage or inventory ability that only allows you to put non-living things inside and also freezes time.
The reality is that the function of stopping time is unnecessary, after all the decomposition arises from fungi or microorganisms that travel through the air, if the ability does not allow living beings to enter then they will not be able to decompose them. Although there are some that break down by chemical reactions, but they are not really abundant. The same is for objects that are eroded by air or water, if the ability only lets in the specified object then it will remain intact. This is what is normally known as void sealing, the thing is that the ability is an absolute void.
These are the ones that come to mind for now, but you are free to comment further on the subject.