What If Chuuya Didn't Exist in Bungo Stray Dogs?

Well, I haven't seen the rest, so I don't know if the teacher will accept my feelings about reading these articles (I haven't finished them yet). When I read the first article, there was a shortcoming, that is, Chuuya disappeared and his memory records were gone. This means that if the memory about Chuuya is gone, does that mean that no one in Yokohama will remember Chuuya? Ranpo and Dazai may have some vague memories (after all, they are the script team). Just like the teacher who commented, the knife is relatively profound.