Kei Shidou

Kei Shidou is a high school student at Meguri-ga-oka Academy who found herself trapped in a shopping mall alongside her best friend Miki following the outbreak of a zombie crisis. Energetic by nature and deeply passionate about music, Kei struggled to endure the suffocating hopelessness of prolonged confinement. Unable to simply wait in silence, she made the courageous—and ultimately fateful—decision to venture beyond the safety of the mall alone in search of help. Her whereabouts remain unknown, and the portable music player she left behind becomes a powerful emotional symbol for Miki throughout the story.