The fourth installment of the lesbian bondage story where the power of S transforms M at last arrives! "Little Devil Mistress" Haruka Yuria, "Slender Beauty Mistress" Hanasaki Rei, and "Breast Beauty Slave" Otoha Nana unite in "S-Typed Discipline, M-Typed Desire: Bondage Lesbian." Two dominant women awaken true masochistic desires through intense training, unfolding new developments. Under the strict yet passionate discipline of Yuria and Rei, Nana awakens to her masochism within their lesbian relationship, driven by pleasure to embrace new desires. As the boundaries between domination and submission blur, the drama woven by the three deepens.