Hatsune Miku and her friends Rin, Len, and Luka are not only back in manga . . . They're back to school, enrolling at the St. Diva Academy for Vocaloids! They're going to give it their best at St. Diva, as a wonderland of friendship, determination, and even love unfolds! But can they stay out of trouble, especially when the mad professor of the Hachune Miku Research Lab is nearby . . . ?