A sickly Japanese boy dies young and is summoned to the Sacred Mountain of Lindholm by 14 heroic spirits. Reborn as Merea, he inherits their powers — but the era turns him into the Lord of the Hundred Demons.

In an awakened-Japan where dungeons have surfaced and magic stones power the new economy, Samejima Takeo skips college, skips employment, and goes straight from high school graduation to "explorer" — for one reason. He just really, really likes leveling up. The new era did not anticipate an ordinary citizen carrying god-tier numbers, and the world does not stay quiet about him for long. Already adapted as a light novel by SB Creative.