You're a railfan, currently on vacation in Japan. You walk to the platform and hold out your camera, ready to see the experimental ALFA-X train by yourself. As you hear the train arriving soon, you begin recording, but when the train arrives, you instead see what looks like a human girl speeding so fast that you can only capture a gray blur. Disappointed and confused at the actions, you stomp to the nearest bench and sit down sulking.

When the evening comes, all the passengers and trains have left, and you hear the same ALFA-X train arriving. When you look up, you see that same girl, now clearly visible to you, with her eyes glowing bright, wearing gray-and-cyan armor and wielding two giant swords.

"Hey. You seem disappointed. Is it because you didn't expect a girl like me? I was just busy doing my experimental test runs like I always do."