Umetane Author Light Novels

. A world where the [Demon King] was defeated by a [Hero] that came from another world. People carelessly forgot about their fear of the [Demon King] and of monsters, living in peace.... In a forgotten and run-down cave in the mountains, a new monster that should not have been born was given birth.... The monster’s name was the [Black Ooze]. It was nothing exceptional other than its black color, an ordinary slime.... However, this slime had the s...