FC2-PPV-4685315 is a special documentary filmed secretly inside the National Yoyogi Stadium just before the All Japan High School Championship of the Olympic Cup. Posing as staff, the crew staked out the venue from early morning, using a remotely controlled camera hidden in a bag to capture real-time footage of the teams' pre-competition warm-ups. The atmosphere buzzes with energetic cheerleading chants and determined athletes preparing for battle. Because it's right before the main event, some girls' under-skirts have become damp with sweat, and they begin moving around in their soaked panties. The intensity and tension of the athletes come through vividly, directly to the camera lens.