After her grandmother passed away, high school student Ryō Machiko began living by herself. Although she recreated her grandmother's recipes perfectly, she felt that something was missing. However, when a girl named Kirin begins visiting her home, she realizes that company makes any meal taste better. Together with their friend Shiina
, they enjoy many different kinds of delicious foods together.
The story follows Ryou, a middle school girl who lives by herself. She has a knack for cooking and makes friendships with everyone through her food. The cooking manga is "full of detailed cuisine art to whet the appetite and slightly erotic meal scenes." The "koufuku" in the title is a wordplay on two Japanese homonyms—one which means "happiness," and another that means "appetite."