Four years ago, Mihana Sumikawa's husband left his corporate job to start his own company, and ever since, Mihana has stood by him, supporting him through thick and thin. However, a major mistake surfaces in a project from their client, Umeda, triggering a formal complaint. With her husband away, Mihana rushes to apologize, but Umeda coldly declares, "If you want to show sincerity, pay with your body." Desperate to protect the company, Mihana reluctantly agrees—just this once. But from that moment on, under the guise of business hospitality and further apologies, Umeda begins making one sexual demand after another. With no way out, Mihana is forced to comply, slowly being driven to the edge mentally and emotionally. The story unfolds her inner conflict, anguish, and the crushing weight of her humiliating predicament.