The party left the depths immediately after the fight. They had gained nothing from the depths other than exp as no monster dropped any items. When one reached a higher realm, it became increasingly more difficult for them to gain items as every single one was of a high rank and would bring them a lot of benefits.
The way that people would get more powerful items at higher ranks was by gathering the remains of the monsters and rare ores in the world and having an item made. It wasn't a problem for the right now as they had Adrian who was a master smith, but if he was to leave, then it would become very difficult for them to gain access to higher-ranked items as there was only so much one smith could do.
