A student moves into a maisonette apartment for university and soon notices strange occurrences: coffee that appears freshly made despite no one else being home, objects that go missing and reappear in different places, the persistent sense of an unseen presence sharing the space. What begins as a domestic mystery spirals into a layered puzzle where the line between a supernatural haunting and a real intruder blurs, and every clue only deepens the uncertainty.

An elderly woman reports that someone is living in her ceiling. Then she vanishes without a trace, yet her social media accounts continue to post as if nothing happened. A police officer assigned to investigate the disappearance follows the trail of the so‑called ghost account and finds himself drawn into a world where the dead and the living communicate through digital means. He is aided by a psychic who refuses to meet in person and an AI assistant that performs exorcisms. The case leads toward a place called “the other side,” where the rules of reality no longer apply.

Across the world, the corpses of giant monsters are washing ashore more frequently every year. A scientist who specializes in kaiju anatomy is called in to dissect these colossal beings, collecting specimens and searching for clues about their ecology and cause of death. Her work becomes a race to understand a terror that surpasses human comprehension, armed only with intellect and an unwavering curiosity.

These three stories form a collection that examines the boundary between this world and whatever lies beyond. Each tale—a locked‑room mystery in a duplex, a cyber‑haunting that refuses to stay buried, and a scientific inquiry into the impossible—approaches the same question from a different angle: the names we give to things like “autopsy,” “ghost,” and “locked room” are only labels from our side. The other side may have entirely different names, and the author seems to know what they are.