From MangaHelpers:
Misumi is a wealthy, teenage girl who is served by both a maid, Misaki, and a butler, Tsukasaki. Misumi is pretty popular at her school, as is Tsukasaki, who gets all the girls flustered when he comes to pick up Misumi. However, none of the other students could guess what Misumi and Tsukasaki's relationship is like in private. Tsukasaki latches onto Misumi's fondness for maids, and buys her a sexy maid uniform. It's soon clear that Misumi finds submission very arousing. Tsukasaki sets up various sexy situations with power differentials, and Misumi and Tsukasaki begin a Dom/Sub relationship. What will happen if anyone finds out about Misumi and Tsukasa's sexual games?