One day, two male servants named Chichi and Popo are delivered to their ordinary sisters from their mothers. These two men, according to their childhood covenant, are to be dedicated to sisters, whatever they want. My sister and my two sisters are so sad that they treat people and harass them. The two are disqualified with disagreements. But sisters instruct servants to fill their sexual fantasy. The two sisters have a good night’s sleep that they have never experienced before.