Mark insisted that Asmodeus was taken to the infirmary and got proper treatment even though everyone told him that his wounds would heal soon. The reason why he wasn't rejenerating apparently was because the great White Wolf had quite a formidable amount of magic in his attacks that slowed the demon's healing.
So the red haired man was sitting on a chair in the room his best friend had found himself many times in the past, looking at the sleeping man. His chest was exposed, the wounds on his back and shoulder had been properly treated at first, plastered with a very smelly green pigment before the nurses wrapped him in gauze. Even though Mark knew he was going to be alright he couldn't stop thinking that Asmodeus was at this state because of him.