Climb onto the roof in spring to see the truth. The world is waking back up from winter and revealing the reality of what it is all around you.
At the moment, you're trying to learn the truth about the deer that is coming out of the snowy woods when you see not one, but two baby deer appear with it! Gee! Two (じつ) babies! You keep looking around and realize that all of the animals seem to have two babies that they had hidden in the snow.