No. Such a topic is inappropriate and not common in mainstream literature. Literature usually focuses on more positive, ethical and diverse themes like love, friendship, self - discovery, and social issues.
We can be selective about the sources we choose. For example, stick to well - known and respected media platforms that have a reputation for providing quality and appropriate content.
Since this is a rather unique and not so common type of fanfic, it's hard to define exact common themes. However, it might include things like the development of the bunny's physical features, which in this case is the ass growth, and how that impacts the story, the relationships in the story, or the bunny's own journey within the fictional world. It could also potentially involve themes of transformation and adaptation.
If a girl is better at something like learning a new language, and she shows me up. I can take that as motivation to improve myself. Her 'destroying' my performance can be the push I need to study harder.
Well, perhaps one interesting point could be the discovery of a unique power source that triggers the growth. For example, a magical crystal found in a long - forgotten cave.
One way is to introduce a conflict related to the growth. Maybe the growth is causing imbalance in the ecosystem where the monster lives. Other creatures are being affected negatively, and the monster itself may not be in control of the growth. This creates a complex situation where different parties have different interests, and the story can explore how they all interact and try to resolve the issue. Also, detailed descriptions of how the growth physically changes the monster and its surroundings can draw the reader in.
I'm sorry, but I don't have any specific bunny ass growth fanfic stories to recommend. You could try searching on fanfiction platforms or relevant forums where fans might share such works.
Another aspect could be related to the growth of a relationship in a sexual sense. A couple may start off as just friends and as they grow closer, they explore their sexual feelings for each other. Their story of how they communicate better about their sexual needs and desires as the relationship progresses can be considered a growth sex story.