There isn't really a definitive 'biggest breast' in world fiction as it's not a common or appropriate standard for categorizing fictional characters. Fictional works span different cultures and genres, and the emphasis is usually on the character's role in the story, their personality, and their journey. For instance, in classic literature, female characters are more known for their moral and intellectual qualities.
It's a rather odd concept to search for the 'biggest breast' in world fiction. Fiction is about storytelling and creating believable characters. While physical descriptions are part of it, they are not the sole or most important factor. Consider the great detective stories, where the intelligence and deductive skills of the characters are what matter most, not their physical appearance in terms of body parts.
Breast expansion in fanfic often refers to a fictional concept where a character's breasts grow in size, usually in a fantastical or non - realistic way. A breast pump in this context might be a device used in the story related to the breast expansion plot, perhaps for some sort of experimental or medical - like purpose within the fictional world of the fanfic.
They can be used to add a unique and often unexpected element to the story. For instance, the breast expansion might be used to symbolize a character's transformation, and the breast pump could be a plot device that drives the story forward by either causing or resolving the expansion issue.
The main distinction of porn with a story genre from regular porn is the presence of a coherent narrative. Regular porn often jumps straight to the sexual action, while the story genre tries to add some kind of story framework around it. But in the end, both are adult-oriented and feature explicit sexual content.
Well, it's hard to say for sure. The concept of 'porn-like' is quite subjective. Some might consider certain novels with excessive sexual descriptions as such, but it depends on individual perspectives and cultural standards.
In many places, 18+ porn comics are considered illegal. This is because they can have a negative impact on society and violate moral and legal standards.