Shirou Yamaoka's father and rival. Kaibara trained Yamaoka, but the two had a falling-out. Their relationship worsens when Kaibara begins working on the "Supreme Menu" project for the Teito Times, a rival newspaper. He is also the founder and director of the "Gourmet Club." Kaibara is an artist, and also the author of the "Dictionary of Poetic References."