All that Eren knew is that humanity lost the war. His friends and comrades are dead. And Levi, his mate. He saw how that titan crush him on its fingers and threw the raven's body across the meadow. Eren knew he was about to die as well. Then he woke up and found himself on the modern world, everyone is alive. And Levi. His lovely mate is alive. And pregnant with his child?! Meanwhile.... All that Eren knew is that he was an engineer and he had a pregnant Omega that is always home waiting for him when he comes home from work. Then he woke and found himself in a castle with no sorts of appliances and electricity. His friends we're wearing weird costumes and his beloved mate hates him!