Here's a thought, if the store actually was a used bookstore because in an age where nobody reads paper books any more the concept has become fantasy. And if things that are fantasy are moved to Gensokyo, is it possible the store becomes Kosuzu's bookshop from Forbidden Scrollery?

good thinking

i think the cafe they are referring to would be old adam right?

i think the cafe they are referring to would be old adam right?

Nah old adam is a bar they probably mean the satellite cafe