Ema Chidzuru, a 26-year-old woman, begins a secret romance with her superior at work. She's currently living with her boyfriend, a 35-year-old unemployed musician who relies entirely on her for financial support. He earns a small allowance through part-time jobs but is known as a scumbag who physically abuses her. During a department drinking party, her coworkers discuss her situation and urge her to break up with him, but only her older boss consoles her, saying, "When you fall for someone, there's nothing you can do. Just keep going as far as you can." They occasionally have lunch together, and she continues confiding in him about her boyfriend troubles. Though she explains why she can't leave, her boss always offers encouragement. One day, she catches her boyfriend having sex with another woman in her apartment. Devastated, she runs out and calls her boss from the nearest station, crying nonstop for an hour as he rushes over in his car. He takes her to a friend's house that night, and the next day she heads to work from there. Later, while her boyfriend is away, she removes all his belongings and officially ends their cohabitation. After things settle, she invites her boss out to dinner to express her gratitude. Over the meal, she learns he divorced one year ago. Sharing personal stories brings them closer quickly, and their secret affair begins. Due to workplace dynamics—risking accusations of sexual or power harassment—he couldn't confess his feelings, but she understands and makes the first move, leading to a passionate relationship. Their hidden daily life includes love hotel rendezvous, intimate moments, and creampie sex.