Before the coffee cools down, before we say goodbye

The events of the novel take place in a café in Tokyo called "Fonicoli Fonicola" located in a narrow back alley in the city. A unique experiment is conducted in this café, manifested by going back in time to the chosen time within a set of rules. This experiment is only available in one seat, provided that the customer waits for the ghost sitting on this chair to go to the bathroom. Once the time travel occurs, customers cannot leave this seat, and they can only meet people who visited this café in the past. But no matter what happens in the past, it will not affect or change the present. The most important condition of this experiment is that the customer returns to the present before their coffee cools (about an hour). Author / Toshikazu Kawaguchi Book format / Paperback Number of pages / 197 Publisher / Arab Scientific Publishers