The air vacuum preventing him from breathing would not pose much of a problem for him, nor would the sudden drop in temperature as he could resist the cold for a while.
However, the lack of atmospheric pressure was a completely different matter.
Without an immortal body, individuals below the magus level still rely heavily on the flesh to survive. With 60% of the human body being made of water, the lack of atmospheric pressure will cause the liquid in the human body to reach a boiling point at a rapid pace, turning it into gas.
In such a situation, a normal human being without special protection would die in a matter of seconds. Although Emery would be able to last considerably longer with his level of physical constitution, it still would not be able to last him more than a few minutes.
To make matters worst, his enemy out here was not just the space, but also the metal magus who purposely created the hole while floating in space to capture him.
