Most of his own wounds were from the Gokurakuen ship had blown up, and trying to infiltrate enemy base, and with his broken arm it would be pretty easy to get rid of him in the end. Just grab his broken arm, as it had not had the chance to heal yet. It had only been a day since he broke it.

"The plants! The shinigami!" That would probably do nothing to make him seem more sane, but in Ayumu's mind it was a dangerous place to be, and they had to get somewhere without vegetation.