Known as an assistant to a famous hidden camera director, Mika makes her directorial debut with this work, pushing the boundaries of covert filming techniques to their peak. In an audacious setup, she modified waterproof wristwatch cameras and concealed two of them inside shampoo bottles, sneaking into a bathhouse near a women's dormitory. The filming strictly targets young women, completely excluding older women—a testament to her meticulous approach. The cameras follow the female form from the changing room to the washing area, and astonishingly, even into the bathtub itself, conveying a palpable sense of ambition and passion throughout. This debut marks a groundbreaking step beyond the conventional limits of the hidden camera genre, unveiling new possibilities in visual expression.