Cherry blossom season in Japan is also a season of change. In late March, graduations take place all across the country. Early in April, students and workers attend entrance ceremonies for their new schools and companies. This period also marks the turn of the financial year, as well as a fresh emotional start for many Japanese. Our expert guest this time is the writer and cultural commentator Hisafumi Iwashita. And in Plus One, a unique kind of memento related to this season of change.