Ane to Imouto o Iinari ni Suru 10 no Kairitsu ~Hou mo Shimai mo Okashitsukuse!~

This is the story of a boy who had three sexy sisters. They kind of overwhelmed him and made him their yes-man. "I hate this! Some day I'll turn the tables!" he vowed. Well, that day has come - an angel has visited upon him, bequeathing a tablet of ten spaces so he can write his own... TEN COMMANDMENTS! for his sisters to follow!