Tokyo Ghoul, Vol. 7
This book can be downloaded and read in Apple Books on your Mac or iOS device.
Kaneki is captured and then tortured by Yamori, one of Aogiri Tree organization's most sadistic members. To survive the interrogation, Kaneki will have to finally surrender to the Ghoul inside him, but if he does, it will change him permanently and push him even further away from being human.
Yamori gets eaten by Kaneki in the anime. I like how the manga made him suffer and ultimately get finished by that juzo kid. Two of the craziest characters in the manga.