In a room, there's a magical mirror. When a person looks into this mirror, it doesn't show their reflection but instead shows what's directly behind them from the mirror's perspective. Keiji and Lina are standing in the room with the magical mirror. Keiji is facing the mirror, and Lina is standing behind Keiji, a few steps away. What does Keiji see in the mirror when he looks at it? Make your response very short.
When Keiji looks into the mirror, he sees Lina in the mirror. The magical property of the mirror is to show what's directly behind the person looking into it from the mirror's perspective. Since Lina is positioned directly behind Keiji, she is the one reflected in the mirror's surface instead of Keiji's own reflection.