Chapter 152 opened with the idea of Touka that had already been realized in chapter before, which was to search for Kaneki's ring. Kimi himself agreed and argued that this was easier than finding the hot temperature of Kaneki, considering Kakuja itself was warm, so the search would be more difficult.
GAME Dreamer Limited
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When the location is found, Tooru Mutsuki appears and immediately attacks Touka, but Touka is saved by one Ghoul until his body is split. Mutsuki is a member of CCG, Dove or Merpati, and used to be in Haise Sasaki or Kaneki Ken's team.
Touka asks Mutsuki, why a CCG like him actually disrupts this rescue process, which CCG and Ghoul are already working together. Mutsuki does not care, because his goal from the beginning was to want Kaneki not to be someone else, and to do what he wanted (in this case, he turned into Dragon for wanting to live and grant his own wish).