We Love Master!

We Love Master! is an adult visual novel. Players are Yuuki Toshiya, a boy who's really popular at school due to his grades, looks and charm offensive. But that's just one side of him. Toshiya also really enjoys having sex, calling himself a "super-pervert". As a masochistic sadist, he blackmails three girls, Sakura, Hime, and Kuu into being his maids.

Toshiya comes from a wealthy family, and as such, has had a maid for years, called Ema. Ema and Toshiya trust each other and treat each other with respect. Thus, Ema will do her master's bidding without question. As head maid, she'll help him in accomplishing his plans for the girls.