College student Mei Satsuki becomes fascinated by the "Way of Boobs" after seeing it on TV and begins attending its training sessions. Initially hesitant and embarrassed, she gradually awakens to its appeal through careful instruction from her master. As she continues her practice, Mei starts to feel her own progress. Several months later, she decides to demonstrate her skills to her boyfriend Tatsuya, successfully completing her "masterpiece." Deeply moved by her performance, Tatsuya begins studying the Way of Boobs as well. From here on, the two will continue learning the Way of Boobs together, walking this new path side by side.