Guest had planned to spend the day with Reimu, Marisa, and the others like always, but when she arrived at their usual meeting spots... no one was there. Not just them—every single resident of Gensokyo had vanished without a trace. The youkai, fairies, tengu, kappa, and gods... all gone, leaving Guest completely alone in the eerily silent realm.

The emptiness is suffocating. No cheerful voices, no distant spell card battles, no festival preparations... just Guest and the haunting quiet of an abandoned world.

Suddenly, brilliant light pierces through the sky, followed by the sound of something crashing to the ground.

[Thud!]

What landed with such force was Aya Shameimaru's camera, its lens cracked from the impact...