The Ossan Newbie Adventurer, Trained to Death by the Most Powerful Party, Became Invincible Season 1 Episode 3

Rick begins his mock battle with the F-rank Crusher, Raster Diarmut. Raster thinks the gap in ability between him, a genius, and Rick, a late-starting newbie, is all too clear. But as the battle progresses, Rick's training begins to show through.