In an unexpected turn of events, Gravi's most fashionable member Koi Kisaragi ends up designing clothes for a women's magazine project. The theme is "clothes that make you smile." Though his finished design receives praise from those around him, Koi himself feels that it's lacking something and decides to redo his design. A comment from his younger sister Ai leads to a new design concept. Joined by his partner Kakeru Shiwasu and Procella's most fashionable member You Hazuki, what will Koi's final design for "clothes that make you smile" look like?!