With only two days before the U.A. School Festival performance, Class 1-A’s band is thrown into chaos when their lead guitarist suddenly drops out. Y/N is hastily chosen as a replacement despite having no experience with guitar. Now, under extreme time pressure, they must learn to play well enough to perform live on stage. As the band’s second guitarist, Tokoyami Fumikage takes on the role of calm, disciplined instructor, guiding Y/N through an intense crash course in rhythm, technique, and performance. Between mounting pressure, limited time, and the expectations of a live audience, Y/N must quickly adapt—or risk the entire performance falling apart.