The sisters are burdened with their father's massive debt and succumb to the offer from a loan shark, ending up working at an "oppabu" bar. Gradually, extreme backroom services become routine—handjobs, titty fucks, blowjobs, and creampie sex scenes unfold one after another. To protect each other, both Ruka Inaba and Arare Mochizuki sacrifice their bodies, drawn deeper into the underground oppabu world. The realistic atmosphere of the shop is fully recreated, with the beautiful big-titted sisters' cleavage filling the screen for maximum visual stimulation. Expect an intense, hardcore POV experience that pushes excitement to 120%.