Natsuno, a girl who leaves her hometown of Tokyo and continues traveling alone to the north. She is alone. She left her high school classmate at Tokyo, and got separated from her parents at some station. After the train stopped working, she walked alone and continued her journey. She had not where to go and any purpose. The world has ended before half a year. An unprecedented pandemic has destroyed society in just a few moments. When infected, a person loses reason and becomes a monster cannot speak that attacks the person. Neither the causative virus nor the bacteria were finally revealed. People don't know anything. Still, what is in front of her is just reality, Even if she walks around the town, she don't meet anyone and have no choice but to continue her journey alone.

Natsuno, a girl who leaves her hometown of Tokyo and continues traveling alone to the north. She is alone. She left her high school classmate at Tokyo, and got separated from her parents at some station. After the train stopped working, she walked alone and continued her journey. She had not where to go and any purpose. The world has ended before half a year. An unprecedented pandemic has destroyed society in just a few moments. When infected, a person loses reason and becomes a monster cannot speak that attacks the person. Neither the causative virus nor the bacteria were finally revealed. People don't know anything. Still, what is in front of her is just reality, Even if she walks around the town, she don't meet anyone and have no choice but to continue her journey alone.