Buranya

Originally wandering the streets, this stray cat was brought back to the workplace by the protagonist, Yuki Aito. Astonishingly, it looks exactly like a fictional character Aito had previously drawn—a cat wearing a suit with a bra on its head—thus naturally adopting the character's moniker. While it receives boundless affection from the assistant Sahoto Ashisu, it consistently demonstrates extraordinary agility and an intellect comparable to a human being. It thoroughly enjoys outsmarting and toying with Aito, to the extent that its exaggerated and highly sentient behavior throughout the series eventually transcends that of an ordinary feline.