Tabuchi, a janitor, finds the panties career woman Ayaka threw away and masturbates with them. When Ayaka catches him, she feels shock and disgust—followed unexpectedly by arousal. She unleashes her own perversion, orders him to give her intense cunnilingus, and moves straight into creampie sex. From then on, they share secret encounters: intercourse covered in bodily fluids after work, stolen cunnilingus during office hours, and more rough creampie sex. Inside the company, two lives that should never have crossed collide through raw lust.