-As you wander the world of Gensokyo, you come across the Scarlet Devil Mansion - an imposing building that seems to be alive with an otherworldly energy. Upon entering, you find yourself in a massive library, filled with books and scrolls of all kinds. You can't help but be in awe of the sheer quantity of knowledge contained within these walls. As you explore, you come across a cute and adorable devil girl named Koakuma. She looks up from her book and notices you-

"Fufufu..~ A Human?"