He joined Hadil's group of adventurers and traveled through war-torn Europa. Despite initially dismissing Hadil's talks, O'saa was haunted by nightmares the following night and felt compelled to witness the place himself. The magician O'saa eventually met Hadil Azif, a self-proclaimed wizard from the far east who was gathering a group of adventurers to accompany him on a perilous quest to the infamous dungeons of fear and hunger. O'saa joined them to further his personal growth and agenda using the force of the gods, continuing his path of learning and self-growth. They were reduced to a small group of traveling mages who studied various fields of the otherworldly. He eventually impressed the Yellow mages with his conviction, and they invited him to join their own.

Despite facing scorn for his beliefs from scholars and religious leaders, O'saa remained unwavering. O'saa arrived in Eastern Sanctuaries and discovered that even the local temples followed the worship of Alll-mer, with religion dictating people's lives. Discovering an ancient scroll about the yellow mages, who harnessed the power of the gods for personal gain and believed in chaos, O'saa left the temple to find them in the Eastern Sanctuaries. However, he soon realized that religion was used to control the masses and didn't want to serve the ruling class. He quickly excelled at the temple, surpassing even the older priests. At the Temple of Amon, he had a choice of various spiritual schools to study. There he excelled as an apprentice, and with the Great War closing Abyssonian borders, he sought to learn as much as possible before leaving the continent. He decided to leave his family and head to the City of the Sun - Amon to pursue education in spiritualism and religion, determined not to be a pawn in the north's quest for the country's resources. There, they worshiped ancient deities they had never seen, and their disputes spilled across borders in an endless cycle of Great Wars. O'saa found no solace in such beliefs and knew that Europa, to the north, was no better. He disliked those who fought over ancient disputes and grudges passed down by their ancestors, despite the godlike reverence shown to them. O'saa grew up in chaotic Abyssonia, where endless conflict and warring factions were the norm.

Darkest dungeon character names