Board Thread:News and Announcements/@comment-99.246.108.110-20140907175918/@comment-6697950-20140907180740

Atsushi (Johnny) injected Kazuto with a drug that causes heart paralysis. His heart was restarted, but he suffered brain damage due to a lack of oxygen until his heart began working again.

And I have no idea where you got the idea that they exchanged souls. Completely ridiculous.

P.S. Don't double post. Make an account if you post before finshing your idea.