"I've always been worried about having small breasts..." No, A-cup is now considered an endangered species. With the declining number of flat-chested girls, protection efforts are spreading. Particularly, flat-chested beautiful girls are expected to become even more precious in the future. This is an era where gentleness toward nipples and careful attention to her private area are demanded. This time, I lost control due to her overwhelming cuteness, resulting in excessive stimulation. It was lucky to meet a girl with such a sensitive and receptive body type. An exclusive newcomer—a rare A-cup beauty. Her smooth, straight, slender figure is her charm.