Kana is the first female manager at a long-established renovation company, and is expected to have a bright future. However, she is strict at work and does things her own way, and her subordinates call her "arrogant" behind her back. One day, she receives a complaint from a client, and when she goes to apologize... The client explodes with anger at her apology and says, "You don't seem to be sorry!" and forces her to insert a vibrator. After that, every time there is a complaint, Kana continues to be humiliated with a fixed vibrator...