Red Dead To The World RDTTW

The world ends with a sound before the grand Issekai began. Everyone in the world was transported to different worlds all around the multiverse. At random people are taken to new worlds and replace their doubles in their new universe. Red's change wasn't the best. He's been reborn as a slave to a centaur with a shock collar around his neck. Watch him struggle to break free from his bounds and try to survive.