Kazuya, who lost his mother and has been living with his father in a three-legged race. One day, when Kazuya comes home, he sees a gorgeous home-cooked meal and a young woman. It was Miki, my father's dating partner, who I had heard about. "Dad, I decided to remarry Miki-san." A young beauty who suddenly became a mother-in-law. …It was inevitable that Kazuya would be conscious of Miki as a woman.