After moving to Tokyo from Niigata, Akari Neo started her new job as a fresh employee this spring. During the company training period, she grows close to a male coworker, bonding with him through their shared work challenges and private moments. Though she's engaged to her boyfriend and living a fulfilling life, one day she is forcefully taken by her coworker, Ashida, leaving her deeply shocked. Later, when she learns Ashida has stopped coming to work, she worries and visits his apartment. Touched by his sincere and earnest feelings, despite being in a relationship, she continues having unprotected creampie sex with him.