Talk:Kakuja/@comment-188.63.130.139-20160424172532/@comment-128.239.208.159-20160429005206

My theory is that RC cells are some kind of parasite that cause the infected person to try and consume other RC cells. Once it reaches a certain stage it starts trying to completely take over the host body. Why else when Kaneki uses his kakuja he starts screaming at something to get out of his body and ranting that his body belonged to him and him alone. He's sharing a body with another entity, one that is perhaps given strength by his negative emotions.