On a scorching summer day, I visited a famous Kansai beach resort with a friend interested in hidden camera filming. By chance, the wife of the beach house owner was there, and I jokingly said to her in a Kansai dialect, "If you give me some hidden camera footage, I'll buy it from you at a high price." To my surprise, she took the offer seriously. Starting the next morning, I was given a job cleaning and regularly swapping tapes. From approximately 480 hours of footage, we carefully selected young women aged 18 to early 30s, editing it into a packed, must-see production.