Toshimi Niki is a student at Fujimi Academy and the best friend of Mizusu Ichijou Durining the outbreak at school, Toshiki and Mizusu are first seen trying at escape while holding hands as a friendship. As they try to escape, one of them grabs her in near stars pull her behind and got bitten. Toshimi begs Mizusu to save her. But Mizusu refuses and kick her in the process