One universe.
Five centuries.
One question.

It starts in Toronto, a few decades from now, the moment dying stops being permanent. Minds can be backed up, restored into new bodies, edited, stolen, sold. Detective Finsbury Gage wakes up in a body that isn't his, hunting the man who killed his wife, and slowly finding out what he's willing to become to catch him. That's Lost Time.

Centuries later, humanity has carried the same question out to the stars, and split in two over it. The United Human Collective holds that only life is life: digital minds are banned, and the people who've crossed over are enemies of the state. The Assembly of Free Worlds lets anyone be anyone, any number of times. Between them sits a weapon that bends spacetime itself. That's Timespace Empire.

Same universe. Same question. Very different scale.