The NEET younger brother, who gambles away his days at pachinko parlors and has been disowned by his parents, ends up crashing at his older sister Iori's place. Unable to scold him, Iori indulges her irresponsible sibling. When loan sharks finally arrive at their doorstep, Iori, moved by pity for her brother, offers herself as collateral. The ruthless loan sharks take pleasure in humiliating the righteous Iori in front of her brother. Unable to resist, Iori becomes a willing sex slave, her pussy ripe for the taking by their raw cocks.
