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Emperor Ludis suffered an unjustified death because of his Emperor’s Mark, which allowed him to make servants out of monsters. But instead of dying for good, he reincarnated a thousand years into the future. His previous life gave him no freedom, so this time, he’ll take it all and travel the world as an adventurer! But although he pretends to be normal, he gathers servants again and becomes the strongest adventurer! Come see what adventures await Ludis in this monster-filled isekai fantasy! Source: MANGA UP! Global

Emperor Ludis, Unfortunately passed away due to "Emperor's mark" (which subjugates "Magic Beasts"). 1000 years later, Ludis reincarnates into a person who should have died. Ludis, chained by rules in his previous life, will become an adventurer and travel around the world to live freely. He may appear to be an ordinary adventurer but behind the facade he is the strongest magic beast tamer. Together with his companions, he begins his wild journey in another fantasy world full of magic beasts.Original Web Novel (JP)