"I won't let anyone call me 'versatile but not skilled' anymore! One day, I will become an explorer nicknamed 'all-rounder'!" Orn Doula was expelled from the "Hero Party" he joined by Oliver, the party leader who was also his childhood friend, on the grounds that he was considered less capable. This was completely unacceptable to Orn, who had switched from Swordsman to Attribute Magician for the sake of the party and supported his comrades with magic he had developed himself. However, he was ridiculed as “versatile but incompetent” by his comrades—who should have shared his joys and sorrows—and it turned out that his successor position had already been established. In despair, Orn bid farewell to the “Party of Heroes” and, with new resolve as an explorer, he set out on an adventure his solo… Lost memories… the strength to fight injustice… a series of new encounters will drastically change Orn's fate. In order to protect his precious comrades, this ultimate “unskilled all-rounder” forges ahead to become the strongest “all-rounder.” Begins a classic fantasy of an extraordinary reversal of fortune!