Buchio Ooishi

A twenty-year-old cat that suddenly evolves into a nekomata.

He's the Ōishi's family cat, who is reborn as a nekomata at the start of the story. He is shy and emotionally sensitive, often crying and apologizing when faced with difficult situations, and is excessively polite, even to his family. He trains with Yuri to hone his transformation abilities while struggling to determine his life's direction.