TSMS-038 A schoolgirl named Saotome Yui sold into underground soaplands due to her parents’ debt

Yui, who looks good in uniform, has been sold to a dark soap because of the debt made by her parents. Yui gradually feels embarrassed by the store manager with her practical guidance. Yui is taught customer service, mat play, and actual acts and soap techniques, and uses her body to repay her parents’ debts.