A Record of Mysterious Eastern Echoes

Also known as: A Few Things About Eientei Becoming a Retirement Home for the Age of the Gods; Do You Like Eientei, Which Gets Blown Up More Often Than the Scarlet Devil Mansion?; After the Lunar Capital Became Part of Gensokyo

In short, it's a Gensokyo novel. Slow-burn warning! The male lead is not a transmigrator! Lots of original content!

I'm no good at writing introductions, so read the story for details.