My Reincarnated Saga in Fódlan

You know the gist. Protagonist dies, meets someone important, and gets a second lease on life in another world. Our hero meets an untimely end when he saves a kid from being killed by a speeding car, only to reawaken in the body of a nobleman recently deceased. Now he must masquerade as Joshua von Cristo and do his best to survive in this world on the verge of war!