Tsurumi Asuta yana da shekaru 17 a duniya dalibin makarantar sakandare. Ya kasance mai koyon girki da ke aiki a gidan cin abinci na jama'a "Tsurumi-ya" wanda mahaifinsa ya gudanar. Wata rana, wuta ta buge Tsurumi-ya kuma Asuta ya nitse a cikin shagon da ke konewa domin ya ajiye wukar mahaifinsa santoku wanda aka ce ruhin mahaifinsa ne, inda ya ga mutuwa.
Lokacin da ya zo wurin, yana cikin wata baƙuwar daji. Daga nan ne sai wata dabba mai kama da dawa ta kai masa hari, amma wata yarinya mai suna Ai Fa ta ceci Asuta tana mai ikirarin cewa tana daga cikin "Mutanen Morihen." A lokacin ne ya fahimci cewa yana cikin wata duniyar.
