You are reading Saiteihen no Osssan Boukensha Chapter 5.1. Adventurer Lewis is nearing 40 and still stuck at E-Rank. Mocked by his guild as the “Immovable E,” he’s become something of a laughingstock. One day, while fighting with his life on the line, Lewis manages to defeat a monster far above his level. As a result, his level increases for the first time