Izumi's death is confirmed. Dr. Baby (Hina)
called why Izumi didn't come to visit him recently, and heard the news.
It was an instant death.
Izumi did actually stabs the knife to his neck in last chapter (the ending
of tankoubon vol.12). To anyone who doesn't know, I've use Izumi's
suicide
attempt picture for my layout months ago. Kouji really in shock hears the
news, but Dr. Baby said that he should've predicted that
when he left Izumi.
Dr. Baby continue, that Kouji will never see Izumi again. The body already
brought back to Japan, and he can't go to Japan
without being capture, because
his picture already on top wanted police.
About Kouji himself, Dr.Baby did surgery for his arm, the metal is remove
(so Kouji can pass airport metal detector freely).
His arm not as good like the metal one, but it looks like a real,
there's no trace.