Natsumi Kusunoki, a sales clerk at a contract, visits Kamonoya, a resident of a rag apartment. With a complaint about the sale of a new product named Decamaran D, a trial experience comes with a sample now! Natsumi is forced to drink and try the effect. The energetic agent that lasts around 6 hours is instantaneous for girls as well! "Cooking and love" Chizuru, a childhood friend under 10 children. When he was young, he grew up like his brother and sister. Chizuru's body was weak and repe...