[Touhou Project X SCP] Beyond the East and the West

Disappearance

Day after day, yet no sign of my partner can be found. I sat aside the road like a puppet without its strings, thinking about where she could have been. Thoughts of the whereabouts of the researcher began to fill my mind: To the mansion owned by that vampire? Definitely not, she said she is afraid of vampires. To the Hakurei Shrine? Probably, but what can she be doing there? To the border? Oh boy, that would be the worst case scenario.

After living with her for weeks, I have understood the one trait which makes her an outstanding researcher: extremely dedicated to her studies – to the point that she would have no other desires other than continuously working on something she is interested in. However, if that really is the case, why did she not stay in my house so she can obtain a quiet working environment?

Suddenly, one thought came to my mind, like pulling a switch that has not been turned on for a long time. What if she really went to the borders for her studies? What if she went elsewhere for the sole purpose of her investigation inside Gensokyo? I thought, standing up and immediately ran back to my house.

After going up a level, I hesitated in front of the door of her room. Yes, it is extremely rude to enter one's room without saying hello, and it is the room of a person who has supported me in many ways throughout our discovery of the truth of Gensokyo. However, this is an emergency. When I cannot contact a person, I guess permission is not required to enter their room. Plus, this is my house, I should have the right of entering a room owned by me... Right? Thinking about my excuse as an intruder, I entered Chiyuri Kitashirakawa's room.

The room has not been changed much, probably because she has planned on her departure from the very start. Right on the table in the room, a letter signed with "Chiyuri" can be easily spotted. I exhaled heavily, as I had suspected that she was kidnapped or something even worse. In the end, she left out of her own will. 

She seriously left a letter inside her room? Did she really have guessed that I would have entered her room after she left? Very nicely done, Researcher Chiyuri. She probably has done studying related to how I act during her free time. I thought, as I gently unfold the letter:

...

To the generous owner of a store in the Human Village,

I apologize for my sudden disappearance, As I have something I must finish before I return.

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Remember, the only obstacle we now have is the "Boundary"

I also left a replica of our most recent discovery in the letter, which I have translated into non-memetic information. If you are still interested in discovering the dark side of SCP-[Redacted]-A, please, do it without me, as my current position will put you in grave danger.