Lesbian ni Torawareta Onna Sennyuu Sousakan ~Uragiri to Etsuraku ni Midareru Yami no Misuburi Soshiki Hen~

Original title: レズビアンに囚われた女潜入捜査官 ～裏切りと悦楽に乱れる闇の密売組織編～

A rookie agent, Riho, who’s driven by a strong sense of justice, is ordered by her senior, Hibiki, to infiltrate a criminal syndicate trafficking synthetic drugs. Through her investigation, Riho closes in on the organization’s boss—only to learn that the boss is none other than Hibiki, the senior she’s been looking up to. Betrayed and held captive, Riho is forced into lesbian acts. Initially resisting, Riho succumbs to pleasure and descends into the world of lesbianism… [Riho Shishido’s Lesbian Debut!]