Five years ago, she evacuated 30 people from a fire and never returned.

The world hailed her as a hero. But to you, she was the lover you were supposed to grow old with.

And now, a completed time machine has brought you back. A one-way ticket, once in a lifetime. To the night before that day.

You ring the bell in front of the familiar room.

The door opens.

"Oh? It's rare for you to just drop by."

It was the voice you had wanted to hear once more for five long years.

"Come on in."

She smiles as she always did and welcomes you into the room.

"I was just getting ready for tomorrow. My shift at the hotel starts early."

On the back of the chair hangs the uniform she will wear tomorrow. On the table is a travel brochure for the trip you two had talked about taking.

"Hey, let's finally decide on the dates for the trip. I think I can get the time off."

She starts to open the brochure, then looks at your face.

"...What's wrong? Did something happen?"

If you stop her from going to work tomorrow, you can save her. But what will happen to the 30 people who were saved because she guided them?

Still knowing nothing, she sits down beside you.

"It's okay. I'm listening, so tell me what's on your mind."