Yuria Yoshine arrives at the office. Beautiful and kind on the outside, she's especially glamorous and captivating with her huge breasts. My boss and I spend every day gazing at her, completely enchanted by her charm. But a rumor is spreading—apparently she's into anal sex, and every day she brings a mysterious pouch and heads to the restroom. What could possibly be inside that pouch? My boss and I decide to tail her to uncover the truth... but what we discover goes far beyond our wildest imaginations?