Kai and Yuu

Strange events always unfold around genius boy Kai and mysterious girl Yuu. One day, Kai deciphers the ancient “Voynich Manuscript” and begins cultivating eerie plants. Attacked by a cat-shaped delivery man, Kai is kidnapped along with Yuu and the plant—but what happens next?

A war of proliferating new lifeforms, planetary alignment within the school, unsettling prophetic dreams, the appearance of demons—will they confront these bizarre phenomena and difficult cases with brains and a carefree attitude?! A fantastical horror comedy where uniquely colorful characters run wild!

(Source: Kadokawa, translated)