Guen, a veteran member of an SS-rank party, is the oldest member but is scorned by his companions and treated as a gofer. He has no right to allocate his own stats and is forced to always increase his "Agility" to specialize in being a gofer. One day, the members who want to be promoted to SSS-rank take on a quest beyond their capabilities, and the party is destroyed by monsters. To save themselves, his companions stab Guen and use his body as a decoy to escape. Severely injured, Guen, whose stats are specialized in Agility, has no way to fight the monsters and accepts death. However, Guen uses his remaining stat points on Agility as a last resort. In a fit of rage, he reaches 9999 Agility, at which point the status screen, exceeding the upper limit, starts to malfunction and blink. The next moment, Guen becomes "Light". This is the story of Guen, a bullied and ridiculed gofer, who awakens from his misfortune, becomes 'Light', and rises to become the strongest.