It's an interesting piece of erotic anime that's quite unique since there's not a lot of erotica that deals with folklore and social commentary. The plot centers around an average young man who for reasons not explicitly told has to move to the countryside. During this process he meets a lonely ghost girl who can't live in urban centers and seeks a wooden house.
While I'm no expert in Japanese mythology I can give an interesting assumption that it's about not losing touch with one's heritage and be aware of seeking empty but quick pleasure in the modern life, with an emphasis on online pornography. The supporting characters are all young adults who live in in an unknown metropolitan city but fear the countryside since it's no fun and sexless. While at the same time lamenting the sadness of being young in modern Japan.
The Ghost girl is an interesting character as she travels through the world, cities and the universe in seek of companionship even though it can be hurtful to live with someone it's better than to be alone. Like the others she seeks quick companionship in sex but it's never enough. A beautiful modern fairy tale for adults.
