Eiro watched his clothes get drenched in the black sludge. Even if he was able to get through this, he would no longer be able to join the small party that was happening within the guild. It was sort of sad, but at the end of the day, other situations like this might come up. Especially once the final companions of the hero had been chosen.
The demon continued throwing up the sludge, until the rock cube he was in was filled with it so much that he could drown in it if he wasn't careful. The stench was unbearable, however, to the extent where Eiro would have thrown up vomit instead if he was currently capable of such a thing.