OL stands for "Onahole Lady," depicting a world where workplace sexual harassment is an everyday occurrence. Shiori is chosen as a sacrifice to boost company morale, forced into morning cleaning duties where she's subjected to compulsory blowjobs and vibrator torture. Cornered by male coworkers, she's repeatedly assaulted with her privates spread open. With no escape and surrounded only by men, resistance is futile. Yet, within Shiori's heart, lewd desires gradually awaken, drawing her deeper into this depraved world.