Before the Coffee Gets Cold (Before the Coffee Gets Cold, #1)

by Toshikazu Kawaguchi

The café that transports you back in time.

“When you go back, no matter how hard you try, the present won’t change.”

The first rule was: The only people you can meet while in the past are those who have visited the café. This would usually defeat the purpose of going back. Another rule was: There is nothing you can do while in the past that will change the present.

“You can’t meet people who haven’t visited this café. The present cannot change. There is only one seat that takes you to the past, and you cannot move from it. Then, there is the time limit.”

At any rate, the initial reason for wanting to go back to the past was to change the present.