Those Worlds That Absolutely Cannot Be Crossed

Bad news, he's dead. Good news, he traveled through time. Bad news, he traveled to "New World" Good news, he did. The bad news is that it's his version of himself that has traveled to all the worlds. The good news is that their capabilities can be shared. Bad news can only be shared after death. Good news, he wasn't the first to die. Bad news, all the worlds he traveled through seemed to be those that were dark and cruel, and where death was almost certain. Worse news, only the soul can return after death.