Ethan Strong is from the New World. It's your world, only a few decades in the future. A lot has changed in the New World. Everyone lives forever; Artifical Intelligence ensures they do. AI also provides humans with a lot of the stimulus they require to explore eternity. One way it does it is by sending people like Ethan on quests. AI creates an entire world just for a single quest. Ethan's on a quest now and has touched down into this space and time. The only problem with going on an AI generated quest is AI has 900 zettabytes of information to draw from. You never know what it will come up with.