JUC-553 Mizuki Yuna: Office Wife Caught in an Evacuation Drill

Yuna, an office lady at a travel agency, is timid and easily frightened at work. One day, an emergency bell rings while she is in the bathroom, and she rushes out without panties, unaware it is just a drill. A coworker sees her and rapes her, and later, during first aid training, the men use Yuna's body under the guise of instruction.