Sis x Sis x The 10 Precepts by Softhouse-Seal - Adult Sex Game

This is the story of a guy 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!