Going back to Ladros City
Souta and Lumilia found Ranny and the guild master's body. Luckily for them, the guild master was still breathing. They quickly poured a healing potion in his mouth and cast healing spells so that the guild master wouldn't die.
They did everything they could to keep the guild master alive. Luckily, the guild master was a strong person, and he managed to survive despite having grave injuries all over his body.
His right arm was gone, and he had a large hole in his stomach. Some of his organs were damaged in the process. His mana pool was severely damaged because of the dense best feram and corrupted air. It was one of the most problematic wounds in his body.
If they delayed the treatment further, there's a high chance that the guild master will lose all of his mana. He would go back to zero, and he would need to train once again to increase his mana capacity.