Satomi Nonomura is a very lovely but lazy woman. Spending most of her days eating junk food and playing video games, she has her own personal slave--her feeble cousin--to cook and clean for her. Whenever he asks "Sato-nee" for some help, Satomi knows that she can walk all over him and he'll always be there to take it. Unfortunately that's not the case anymore, because due to Satomi's selfishness, he's moving out, leaving Satomi to realize how deeply she cares for him. It'snow or never for Sato-nee to show her true feelings to her little slave and if she needs to be a little rough, she'll go all in!