18-year-old Yume Kawai is starting her career today. She was able to get hired by her dream company, which creates her favorite characters such as Twinkle Kururu, thanks to her passion. However, Yume has been suppressing her love for cute things since she was a child, due to something a boy said to her... This is the story of Yume's struggles and growth as she aims to become “the cutest in the world.”