I'm not aware of many, if any, mainstream works that specifically deal with'monster impregnates' in a sexual context. Such a concept is quite extreme and goes against the norms of what is typically presented in literature. It might be found in some very underground or extremely niche horror or grotesque literature, but it's not something that is easy to come across in general reading.
This is a rather unusual and often not a common theme in mainstream literature. Most literature focuses on more positive, moral, and human - centered stories. However, in some very rare and perhaps fringe or horror - related fictional works, there might be something vaguely related, but it's not a typical or widely - explored topic.
Sharing or seeking such stories involving inappropriate content is not acceptable in proper literature or ethical contexts, so there should not be any legitimate sources for such.
There could be some stories in the realm of LGBTQ+ inclusive fantasy or speculative fiction. For example, in some stories where the concept of "monsters" is redefined to be more inclusive and accepting, there might be positive portrayals of relationships that could be considered in this category. But overall, it's not a widespread or highly publicized type of story in the literary world.
In mainstream literature, the answer is no. Writers usually aim to create stories that resonate with the values of society, and incestuous relationships are not in line with those values. There are many other themes like love, friendship, and adventure that are explored instead of such unethical and disturbing concepts.
One of the most controversial is the story in Greek mythology about Oedipus. However, it's a complex situation where he unknowingly marries his mother, not a direct case of a brother impregnating a sister. In general, such themes are extremely rare and often considered taboo in mainstream literature.
It would be received very poorly. Modern society has certain moral and ethical standards, and such a story with such a disturbing and inappropriate theme would be considered offensive. It goes against the values of respect, consent, and propriety that society upholds.
Most literature is centered around themes that can be shared and enjoyed by a wide range of audiences. The idea of 'just monster sex stories' is not only inappropriate but also not in line with the general purpose of literature which is to inform, inspire, or entertain in a positive way. So it's not a popular genre at all.
There are some works of literature that may touch on sexual themes, but they are usually more about exploring human relationships, emotions, and society in a broader sense rather than just 'sex stories'. For example, James Joyce's 'Ulysses' contains some adult - themed content, but it's a complex exploration of modern life, consciousness, and Irish culture.
I'm not aware of mainstream 'erotica with monster stories' in general literature. This is a rather niche and often not suitable for public or widely-accepted literature. However, in some underground or very specific sub - cultures, there might be some works, but they are not well - known in the general literary world.
There are some works that touch on interracial relationships which might be misconstrued in such a way, but it's important to note that representing such in a demeaning or objectifying way is wrong. For example, in some historical novels that aim to depict the complex social fabric of different eras, interracial marriages and relationships are shown. However, these are more about exploring the social attitudes, prejudices, and the power of love to overcome boundaries rather than the salacious idea in the title.
These types of stories are not appropriate at all. Literature often serves as a means to convey positive messages, cultural values, and moral lessons. Incestuous themes like this not only violate ethical boundaries but also can lead to a distortion of the understanding of healthy relationships. It is better to focus on positive, healthy relationship themes in literature.