A uniformed schoolgirl named Kasumi works hard at a convenience store job to support her boyfriend. Desperate for a small raise, she is gradually driven into selling her body. As financial struggles force her to work late-night shifts, the store manager sets his sights on her. A sleazy man targeting her J-cup breasts, he forcefully propositions her with a hidden side job involving sexual services. What begins as titty fuck sessions escalates into hardcore sex and creampie after creampie, progressively dominating Kasumi's mind and body. This isn't just a side job anymore—she's losing control of her entire life.