Yoshimura is the manager of Anteiku. He is a kind and reasonable ghoul who provides aid and food to ghouls who are incapable of hunting on their own. He took Kaneki in after he became a half-ghoul and taught him how he could blend in with humans by controlling his ghoul nature.
Wow, that is just amazing make up work right there! If you go to Yomi’s World Cosplay Gallery, you will notice that he’s not really as old as he looks here! Please do support him through his World Cosplay account! Thanks to Seth for suggesting this!
Source: よみ (YOMI ) on World Cosplay