Two medical students deeply explore each other's bodies. She seeks to understand why she feels pleasure even before penetration begins, while he notices a contradiction—he only feels pleasure after penetration—and strives to comprehend his own body's mechanisms. She pleads with him, "Don't insert too quickly, don't pull out even if you ejaculate, just keep holding me..." Her words carry emotion and longing, adding depth to their relationship. The interplay between medical knowledge and intimate feelings forms the core appeal of this work.