Before the coffee gets cold

Before the coffee gets cold by Toshikazu Kawaguchi 

Prepare to meet four visitors, each of whom is hoping to make use of the cafe’s time-travelling offer in order to:- confront the man who left them- receive a letter from their husband whose memory has been taken by Alzheimer's- see their sister one last time, and- meet the daughter they never got the chance to know. But the journey into the past does not come without risks: customers must sit in a particular seat, they cannot leave the cafe, and finally, they must return to the present before the coffee gets cold . .