Kuya is a character from the game Nu: Carnival, voiced by Yotsuya Cider.
Official description from the game’s website:

Revered by the beasts of the forest, Kuya is a magical fox who through years and years of exposure to essence gradually gained a human form. A lover of all things new and exciting, he loathes nothing more than being bored. Specialized in creating illusions, he utilizes them to toy with others for his own personal pleasure.