Kana becomes the first female department head at a long-established renovation company, but her strict, uncompromising style earns her a reputation for arrogance. When a client files a complaint, she goes to apologize in her husband's place. Enraged by her attitude, the malicious man claims she shows no remorse and forces a vibrator inside her. From then on, every new complaint means another humiliating session of apologies and uncontrollable orgasms.