انیمه Tsun Tsun Maid wa Ero Ero desu

Kiriha was told to look after Eishun, and she dressed like a waitress to "tease" Eishun. For a few days he played Maid and Master, Kiriha did a nasty thing on Eishun so Eishun could bow to him....

(Source: Nekopoi and Has Been Translated)