>You are Keine Kamishirasawa, and the world around you is not the one you remember.
>Yesterday evening, you investigated a strange disturbance in the woods near the village. There you found an unknown human girl, and a mysterious white-winged youkai whose presence seemed to make you drift towards sleep. And then they spoke, and reality broke around you. You awakened to a world where some things are very different, and you've been trying to determine how to fix them.
>You have discovered the human village abandoned, and inhabited only by Hina and a strange human woman named Shiouko. The Spring Snow incident went unresolved, and Gensokyo endured an entire year of winter. The ensuing famine killed a great many people, including your close friend Akyuu. The surviving humans now live in a new village in the foot of Youkai Mountain, under Kanako's protection. Kanako is working with the Kappa to industrialize Gensokyo, and some of the fruits of this work can already be found in the human village.
>You have met and befriended Rumia, who has been following you around ever since.
>You have found a chasm where the Hakurei Shrine should be. Apparently Reimu disappeared with it, sometime after the Scarlet Mist Incident.
>You have fought off Mystia, who evidently held a grude against you for reasons you cannot remember.
>You discovered a house that belonged to your counterpart in this timeline, who seems to have lived a life that you do not remember. She seems to have vanished since yesterday; possibly when you awoke.
>You have realized that Eirin succeeded in sealing the moon years ago, thus preventing you from utilizing your hakutaku powers.
>You have witnessed a large explosion of unknown magical energy that appears to have removed a large patch of forest at a point between Yokai Mountain and the Scarlet Devil Mansion.
>You are currently speaking with Patchouli, in hopes of finding a way through the wards around Eientei so that you can force them to restore the true moon.
>"Do you know if the Hakurei maiden and Marisa were also involved in that investigation? And if they were....."
>"The Hakurei Shrine had disappeared a couple months before this. As for Marisa, I do not know. At the very least, Sakuya did not encounter her that day."