Thread:Gsimenas/@comment-50.82.89.209-20140111054328/@comment-24034641-20140111074740

You obviously haven't been reading the light novels from Volumes 9-13

Kazuto is currently in a coma (so to speak) in the Soul Translator so that his brain cells will regenerate, due to him being attacked by Johnny Black, and because of that, he's unconscious and in Underworld, she's hoping that he'll recover so that she'll go back to Japan with him, however it isn't know in the official light novels whether he'll wake up in time or not. I recommend you read the light novels to catch up to the story more.