1. All "non-items" in the room will enter a different dimension after the room is reset.
2. All "items" in the room will return to their original positions in the room after the room is reset.
Second, look at the ending. In fact, the "item" is not directly reset to the original position of the room, but first enters a different dimension like the "non-item", and then returns to the room after being identified as an item.
So, the ending is easy to understand. After the male protagonist becomes an "item", he enters the room and asks the female protagonist to reset the room. The male protagonist enters a different dimension, sees his daughter in a different dimension, and then drags the daughter back to the room.
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