Superhuman knowledge and crazy thoughts! The proud work of Oguri Kotaro, it is sincerely recommended by famous writers such as Edogawa Ranpo and Koga Saburo! In a strange valley, the bark around the roots of an oak tree was peeled off, and the exposed trunk showed an inexplicable eerie, vivid red color, looking like rotten and suppurating flesh of its limbs. Moreover, in the middle of the trunk, there are five or six wonderful tree tumors, which give the area a strange undulation, making it easy for people to think of human faces. Taki, who lives in seclusion in this valley, recently discovered that her husband has become different from before, with a change in appearance and a change in personality - can this kind of thing really happen?