Imagine if you can visit a time in past or future for a few minutes. What would you do or whom you want to meet? This a plot of the "Before the Coffee Gets Cold" series books, where people travel through time. But there are several catches, primary among them is that no matter what the present will not change. This may be a damp squid for many people, but Toshikazu peels throught human emotions and find several scenarios where people want to travel to past. More intriguing is why some people want to travel to the future. While each book caters to four stories, each story has a very vulnerable and personal reason for time travel; even if it is allowed only once. Each story has its depth that is very relatable. After all, regrets form a good chunk of our lives. One thing to despair about the travel is that you can do it only once. So, make the best of it!