Offshore: Islands, Sea Platforms, and Undersea Locations

Odaiba Island

The Drift (formally the Myatna-Nyseth Drift Arcology}

Sado Island

Distant penal colony for what passes for nonviolent offenders on NeoTokyo. Mostly home to disgraced executives. Some even return.

Quite comfortable: basically a resort compound. But utterly shut off to all communications and supplies. Prison staff maintains the reactor and transporter/comms inhibitors, nothing else, and are rotated every six months, so as not to get too close to the prisoners.

Occasionally a city will do a roundup of homeless and exile them as laborers/servants.

The Floating City

Too poor for The Wreck? You ended up on this trash heap/human warehouse extending into NeoTokyo Bay. But probably not for long: odds are you got killed and eaten your first week.

The wealthy of Old Dome keep threatening to call in a suborbital strike on it, just for aesthetic reasons. There's a GoFundMe page - with a substantial number of 1NB contributions from Net addresses in The Floating City.