When the girls' tiny anuses are stretched to the limit and penetrated by an extremely thick cock, they scream in agony. After being given massive enemas filled with air or milk, enduring intense humiliation and degradation, their bodies are pushed closer and closer to the brink. Throughout the training process, discomfort and pain intertwine with the fleeting pleasure of physical climax. The intense suffering they experience, followed by the overwhelming sensation of release at the moment of climax, defines the unique appeal of this work.