You can’t really go back into Xion’s interior once you’ve pushed past the point of no return in Spire 4. Guides note that continuing from that stage locks you out of Xion’s city interior, though you can still revisit other regions after finishing the section.

What this means

  • If you’re already deep in Spire 4, the game won’t let you freely return to Xion’s interior.
  • The lockout happens around the main-story transition after the Great Desert/Abyss Levoire route and before heading onward to Spire 4/Orbit Elevator.
  • After clearing Spire 4, you can revisit most other areas, but not the interior of Xion.

Practical answer

  • There is no normal in-game path to “get back to Xion from Spire 4” once that point of no return has been crossed.
  • If you need Xion content, the only reliable fix is to load an earlier save from before leaving for Spire 4.

Context

This is usually asked because players want to finish side quests, collectibles, or NPC interactions before moving on. That lines up with guide warnings that you should complete outstanding Xion tasks before proceeding.

Would you like the exact point where you should stop in the story to keep Xion available?