Haru-chan (20), the only daughter of a long-established confectionery shop in Tokyo, is currently busy studying confectionery at a vocational school and obtaining qualifications in order to take over the family business. She recently turned 20 and is now a fully grown woman! However, perhaps due to the image she has had since her youth, people around her still treat her like a child and are overprotective. "Everyone treats me like a child, but... the truth is, I have a boyfriend and I've already had my first sexual experience!!" she thinks to herself...