(So the wards are where the ghouls live. the nice calm ghouls like the ppl in the cafe in the first season live in the 20th. The really evil bad ward is the 14th ward.)
Kaneki hides himself with his kagune and in a unfancy way, eats the human. once he is done his kagune disapears and His eyes return normal.
"You must be crazy to find me and not report me. All humans do that. Why didn't you?"