You open the fire door and you let the building eat every door but yours.
Rieko's notebook goes in first, then the jars, then the men on the stairs, then Yoh's building, then her street.
The corridor does not stop. It only gets bigger.
Saya sits on the bed and watches you come back each time and she never says stop, because she is the same as you now.
Before the last light goes you understand what the whole thing was: you were never being tested. You were being fed.
Then it is only the two of you and something enormous settling, and this is where the story has been going since you woke up.