Tsurumi Asuta is a 17 year old, 2nd year of high school student. He was an apprentice cook working at public dining “Tsurumi-ya” that managed by his father.
One day, “Tsurumi-ya” is hit by fire, Asuta dived inside the burning shop in order to save his father’s Santoku knife which is said to be his father soul, where he found demise.

When he came to, he was in the midst of a strange jungle. He was then attacked by a beast resembling a boar, but Asuta was saved by a girl named Ai=Fa claiming herself as the “people of Morihen (森辺)”. It was then that he realized he was in another world.