[ Everybody and nobody.

Okay, no, Shinobu can know, because she's cute and he could've told her during a wellness check after a mission. ]

His name is Goro Akechi. He's a detective who found incriminating evidence on some of the culprits when we were at the house. He was always well-spoken, though.

[ He certainly didn't have a habit of calling people idiots in public—as far as Zenitsu knows, anyway. ]