Her husband, Yuya, failed in his virtual currency operations and business, and accumulated debts. Just as he was in despair, a creditor appeared and offered to provide an additional 5 million yen. However, the condition was that he would like to keep his wife, Mitsuki, as a part-timer until he repaid the debt. From then on, Yuya was once again absorbed in his business, and was only able to see Mitsuki when he paid back the money little by little. However, Mitsuki was slowly subjected to lewd acts by the creditors, and was transformed into a lewd sex slave...