Clear all the dungeons! There are 666 of them and 10 years to do it. If not, the only thing that awaits...is total annihilation. Ezoe Kazuhiko suddenly finds a mysterious underground space in his yard. When ...

Merea was summoned to a place called "Sacred Mountain of Lindholm" where spirits gather upon their death. He was called upon using an Otherworldly Grass which found its way to his world. The reason for summo...