In a magical realm, there's a perfectly reflective crystal ball that shows not what is directly in front of it but rather what is behind the person looking into it. If Hamza is looking into the ball, and behind him stands Yumiko, who is holding a red rose, what does Hamza see in the crystal ball?

Make your response very short.
When Hamza looks into the crystal ball, he is facing it, and therefore the magical property of the ball is to show what is behind him. Since Yumiko, holding a red rose, is standing directly behind Hamza, the image in the crystal ball reflects what is behind Hamza. Consequently, Hamza sees the image of Yumiko holding the red rose in the crystal ball.