I've heard something from the Yama as well.

That there was a human who reincarnated generation after generation to compile books.

Apparently those "Gensokyo Chronicles" are handbooks with warnings and countermeasures against youkai.

Perhaps this girl too—

I wasn't killed by youkai or by my own curiosity.

This is a book I received from Satori-sama as a child.

With this book, if I remember Satori-sama... if I remember...

Well then... the reason you came all the way to the Underground was a "bet"?

Dogra-

"The fetus follows the process of human evolution in the dream it sees in the womb" It's a very interesting hypothesis