A genius boy, Kai-kun, and a mysterious girl, Yu-chan, solve supernatural phenomena!?One day, Kai-kun deciphers the ancient Voynich Manuscript, and cultivates a mysterious plant. Kai-kun is attacked by a delivery man in the form of a cat, and Yu is kidnapped along with the plant.A war between proliferating new organisms, an alignment of planets within the school, ominous precognitive dreams, the appearance of a demon - will they use their intelligence and carefree attitude to face mysterious phenomena and difficult cases?!A fantasy horror comedy with a unique cast of characters running wild!