Kai to Yuu

Présentation

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)

Source : AniList