This Adventurer Isn't Quite Proper

After being reincarnated in another world, Levi gained the ability to grow stronger by collecting monster materials.

"A slime is worth two copper coins. Don't tell me you think you can get rich off that?"

"Two copper coins? What a deal!"

"Boss, a slime is worth two silver coins now. We really can get rich this time!"

"Two coins, huh? Let me tinker with it some more."

"Boss, there's a whole field of slimes up ahead."

"Good. I'm going in!"

While other adventurers were still fretting over skills, talents, and class changes,

Levi had already started grinding monsters for materials and conquering dungeons.