Touma Tsukishiro is going to be a sophomore in high school this spring. After his parents passed away due to a car accident during his elementary school, he has been living alone at home. However, he has been blessed with friends, enjoys school and living alone. Nevertheless, every once in a while, he would like to have a hot meal prepared by someone else. So, he asks for a housekeeper. He expects a nice lady to come …… The person who comes is a beautiful young woman with big breasts. Her name is Kanako Sakurada. She has a calm personality, but in fact she has an ulterior motive. She wants to find her ideal husband while working as a housekeeper. And she is in love with Touma. So, she wants to stop being a housekeeper and live with him. Touma is a little troubled, but decides to live with her. Thus, Touma’s daily life becomes a very lively one.