Kuro no Kyoushitsu

He found supreme joy in toying with the servitude of a young schoolgirl. He, the twisted main character with a deranged fetish, Uehara Daisuke. He’d become a teacher just to lay his hands on schoolgirls, and it wasn't the first time he'd done it succesfully. Arisugawa Saeka guided him through Meiran Girls' Academy, where she served as the principal. An all-women's school - not just students but also faculty... It was the perfect hunting ground for the protagonist. While working as the only male teacher at that academy, he set his eyes on four female students as his prey. Kusunoki Kazuha, a well-behaved and kindhearted rich lady, with body curves far removed from those a student would usually have. Narukawa Mahiru, a cheerful, healthy sports girl who was the ace of the rhythmic gymnastics club. Konami Yume, a taciturn, academic girl who had lost her emotions and expression. She had the appearance of a doll. And Nomiya Nanako, who wholeheartedly adores the protagonist from the bottom of her heart ever since she tutored him in the past. Trying to push the girls to the limit of their masochism, the protagonist pretended to be a good teacher. They were about to plot an evil scheme to satisfy their black desires... [Translated from DLsite]