It is 1192 in Kamakura period.

Murdered by his brother Minamoto no Yoritomo, Minamoto no Yoshitsune revived from the dead by borrowing the power of youkai. As an herbalist, you accidentally learns the truth of the dark secret and is involved in the plot of revenge.

At the same time, the small fox that you saved before suddenly transforms into an evil fox!

“The one with an innocent soul, I give permission to form a contract with me.”

Trapped in the turmoil brought by the Minamoto brothers, an unexpected love story thus unveils…