Fleeing both the bad guys responsible for his parents' murder and a suspiciuos monk afer his family's powerful lineage, a young Touhou Gessho retreats across the border into Tosan territory. Tosan Koko appears to keep the men out of her domain, and Gessho manages to secure sanctuary with the fox spirits for a few months. Just as Gessho is pleaing with Koko to allow him to remain in Tosan, another enemy suddenly appears to rain fire and destruction upon Koko and her clan.