Tokyo Ghoul Volume 9 further intensifies Ken Kaneki's journey as he continues to struggle with his identity as a half-ghoul. After undergoing significant physical and psychological changes, Kaneki becomes involved in even more brutal conflicts, both with ghouls and humans. His internal battle to reconcile his human and ghoul sides becomes even more complicated as he faces increasingly dangerous enemies and harsh realities of the ghoul world. This volume also explores the deeper motives and backstories of key characters, such as the mysterious and powerful ghoul organization, V. Kaneki's relationships with others, like Touka and Hide, become more strained as his transformation takes a darker turn. Volume 9 is marked by emotional and physical confrontations, highlighting themes of power, survival, and the cost of becoming something beyond human. The volume sets up future struggles and a deeper exploration of the complex, morally gray world Kaneki must navigate.