性奴隷の躾けを施される元良家の姉妹が互いの喘ぎを耳にしながら望まない快楽で喘ぎ逝き狂わされる

His father, the president of a large company, disappeared because of bankruptcy, and traders began to urge his remaining daughters to repay their debts. Beautiful busty sisters escape to the vacant grandmother’s house, but bondage punishment is executed by the betrayal of the servant. The sisters’ bodies were polluted by the men’s hands! The rope that bites into big breasts, the sisters eventually think and fall into pleasure …