Lilith

As far as anyone can tell, Jae-Hee is a shy, hard-working high school teacher. Once she's behind closed doors and drawn curtains, Jae-Hee enjoys spending her time kneeling at the end of a whip. And no one enjoys holding the handle more than her childhood friend, Hui-Lin. But when Sul-Hwa starts her position as a student-teacher at the school, secrets and feelings long buried start to surface. Now, Jae-Hee's about to learn just how much pleasure she can pull from pain.(Source: Lezhin US, edited)