So imagine that Yusaku is the one who's forced to take the apotoxin 4869 (say, after a Kid heist) and he pretends to be his own son (really convenient for hiding from his editors and thus, Kudo Shinichi is born).  By the time the manga roles around he's a teenager and never found a cure.  He knows who Kid was and that Kaito took his place so he's ( Read more... )