Tsukumo Nemuru Shizume

Tsukumo Nemuru Shizume (lit. "Shizume of the sleeping Tsukumo") is a manga series by Yuuzo Takada. It was serialized in Bessatsu Young Magazine.

Plot
1883, sixteenth year of the Meiji age, Tokei (Tokyo). Shizume Kurahashi, a "worshipper" of the scientific method, suffers from a particular disturb: when her heartbeats become irregular she falls in a sleep full of nightmares, while an arachnid-like creature appears from her chest. Can this be explained with scientific reasons? Shizume believes that the answer is yes and she will do anything for demonstrating it... although his father, the divinator Hikofumi Kurahashi, mysteriously disappeared and the intrepid secret agent Kogenta Inui is searching him in an unsure Lovecraftian context. Strange events happen around the capital city of a country that is beginning to get closer to the Western world, and science, superstition, mysterious diseases and hidden sects start to be tied by a unique common denominator that every people call "Tsukumo".