Before the Coffee Gets Cold - Toshikazu Kawaguchi

Every now and then, a customer like Gohtaro would come to the cafe after hearing the rumour that you could travel back in time.

Are you familiar with the rules?’ Kazu asked briefly – there were customers who rolled up at the cafe with no idea of them.

More or less he replied hesitantly.

‘More or less?’ Kyoko shouted.

Gohtaro shrugged apologetically. “You sit in a chair: someone makes you a coffee, and you return to the past.. that’s all I’ve heard.’