[B-RIVER] Mesuana Ni Chiru Hana Ch.4-6 [biribiri]

While her madam squirms and moans on an elderly patron's fingers, brothel keeper Seizou praises the tightness of his establishment and eagerly awaits two new girls arriving soon. The story darkens when investigator Rinna confronts dealer Ibiya Kazuya over the academy's drug epidemic, only for him to unveil her gagged, chained coworker and threaten her beloved younger sister with the very same fate. One month later, Rinna and teacher Reiko-sensei lie collared and nipple-pierced, drooling through endless climaxes as their captors test a new aphrodisiac on the pair and muse over which rich buyer will pay the most.