Overlord fanfiction. Traveling through time and space to become Heiluo Heiluo, an ancient black slime, the oldest and strongest type of slime, the undisputed king of slimes! Flying Squirrel: It’s great that Heiluo Heiluosang and I traveled through time together! Let’s see how slimes and Bone Overlord conquer the other world together! Bone and Slime Group: 410081342 [Gu Sanshan]...