Boukenka ni Narou! Skill Board de Dungeon Kouryaku

Synopsis:

Karaboshi Haruki became an adventurer out of a desire to "stand out," as he lacks any recognizable presence. At some point, a prison showed up under his home in Hokkaido. He happened to acquire a "Skill Board," which allows him to spend skill points to boost his growth rate. Is it conceivable to turn into a famous individual by fanatically plunging into your home prison ordinary?