But It's Zombiemental SAGA.Junko refuses to practice for Franchouchou's Saga Rock performance and locks herself away, forcing Ai to cover her portion of their duet. On the day before the show, Kotaro assures Junko that she does not need to follow the modern standards of the idol industry, convincing her to rejoin the group. When a thunderstorm strikes during their performance, Ai breaks down on stage and struggles to sing, but recovers when Junko lends her support. In the middle of their song, the zombies are struck by lightning, which illuminates their bodies and electrically filters their voices...