Mirrored scene

At the end, when Haru is leaving in a bus, and he looks through the window as Gobei flyes to the sea, the scene is mirrored to make Haru look to the left of the screen, when he was actually shot looking to the other side. You can tell this because you can see three japanese letters ( ha, ke & ku ) in the side of the bus that are inverted.
It's always the same, Don't mirror a scene if it contains letters! people will notice!