Japanese comedy has always been different from Western comedy, with its own approach to getting laughs. Japan has a stunning diversity of humorous entertainment - stand-up, sketch comedy, theatrical shows - and it's starting to find an audience abroad. This time on Japanology Plus, our theme is comedy: we'll get to the heart of the Japanese sense of humor. Our expert guest is Chad Mullane, an Australian who's been doing comedy in Japan for over 15 years. And in Plus One, a trip to comedy school!

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.