The Most Serious Classic of Mountains and Seas

This is a very serious story (see the title). ...Of course, titles are usually meant to be misleading. Legend has it that in a corner of a certain city stands a little villa where hauntings are a regular occurrence. To bring in some income, its owner decides to rent it out. Legend has it that a few people accidentally stumble into another world, carrying not only their bags but also bottles of soy sauce. Legend has it that 2012 is not a single moment, but a process. And when legends are no longer legends, and myths draw close to reality, demons, gods, immortals, and ghosts all take the stage in an urban Classic of Mountains and Seas. The human world is no more, and the apocalypse has arrived!!! "...That's it. What a serious blurb." "Yeah, so serious~~~"