Perhaps the main idea is related to a form of regression. It could be that the virl in the story is forced or chooses to go back to a more infant - like state, and the diapers are a physical manifestation of that. It might be exploring themes of vulnerability, dependence, or a return to a more primitive state of being. This could be for various reasons like a psychological breakdown, a punishment in a fictional world, or a magical occurrence.
The main idea could be about a significant change in a person's life. Maybe the 'virl' experiences a setback or a transformation that leads to the need of being put back in diapers. It could also be a symbol of losing independence in some way.
Well, the main idea of the 'virl put back in diapers story' might be centered around the concept of a new beginning or a restart in a very different form. The diapers could represent a starting over point, like a new phase in the virl's life where they have to relearn basic things or face a situation that is very different from what they are used to. It could also be about the virl having to adapt to a situation that is not socially typical, which could lead to various emotional and physical challenges for the character in the story.