So I was rereading Tokyo ghoul and I found old man who sold yoshimura coffee beans. When touka and nishiki met the bean supplier they said that he looked like a strong willed and a scary individual plus touka said that they ( yoshimura and supplier ) have known each other for a while so I thought maybe he is from the underground you know because he knows yoshimura he is kind of old and one of the things that ghouls can consume without throwing up is coffe and we know that 24th ward ghouls had to survive on something for all those years right? Maybe I am overthinking because it's Ishida but if kid from Tokyo ghouls first 10-15 chapters turned out to be hajime it means that a lot of characters might have some role in the future. :I tell me what you think! The old man is seen in chapter 117