Married woman who fell into a business trip health service

The large amount of debt was carried by her husband, who became a co-guarantor. In order to repay her debts as quickly as possible, Fuyumi clung to her at a "business trip beauty salon." However, the reality is that it is a "business trip health service" that is just called a beauty salon. What awaited Fuyumi, who had stepped inside without knowing anything, was a hidden world where she couldn't turn back.