I`m sorry for late
Setting
The place was in the city that things has been moving by steam.
the time is could be past because steam used in the past.
conflict
I guess the conflict was the red was lost and nobody did not notice that.
Climax.
In my opinion climax was when he took the red to the place for forgotten and chose to not leave her.
Symbol
There were wave arrow that was pointing the place she is going to stay so i think waved arrow symbolized wandering or, nowhere to go
Irony.
He didn't leave her to the place for forgetting however at last he kept her into the place that nobody knows.
theme
You should remember the things that you stopped to use it.
