Kazu Tokita works at the cafe “Funiculi Funicula,” which is run by her relative Nagare Tokita. A mysterious rumor about the cafe has been spread that if a customer takes a specific seat at the cafe, that customer can travel back to a time of their choice. The specific rules for going into the past are: 1) You can't meet people who haven't visited the cafe 2) If you do something different in the past, it won't change the present. 3) Only one seat in the cafe is able to take someone into the past and if the seat is occupied, you have to wait until the customer leaves. 4) When you go back into the past, you stay in the seat 5) The time you can stay in the past is until the moment the coffee gets cold. 4 miracles take place at the cafe.