Youmu and Aya venture through the supernatural realm of Gensokyo to unravel enigmatic occurrences and navigate the fractious power dynamics that threaten its stability. Their investigation draws them into a web of secrets where political intrigue complicates their pursuit of truth, forcing them to confront both external dangers and the conflicting interests of those who inhabit this otherworldly land. Together, the pair must decipher what lies beneath the surface of seemingly isolated incidents to grasp the larger forces at work.