"The Early Gensokyan Period was a time marked by a sudden rise in medieval warfare following the nuclear collapse of Earth, the mass-depowering of Youkai caused by the shattering of the Border, and the conversion towards Christianity following the loss of faith in local legends.

The Tengu were never unified from the start and few could truly claim themselves ready for the warring states that would soon arise. Inubashiri never doubted her own need for combat experience durings Gensokyo's hundred-years peacetime and would readily use her skills to teach a generation of cowardly tengu and untrained peasants."