Talk:Hideyoshi Nagachika/@comment-26379028-20151111205742/@comment-25047329-20151112005410

http://imperialscans.com/read/tokyo-ghoul-re/14-touched-by-the-rhyme/1

They're never addressed directly, but it's mentioned that Matsuri is Yoshitoki's "first son" implying that Matsuri has a younger brother (assuming that IS is accurate). Other than this Yoshitoki's other kid(s) are never shown or mentioned. Since it's quite mysterious, some wonder who this younger Washuu is, and with the popularity of the "Hide is a Washuu" theory, many think it may be him.