Emperor Akihito of Japan is abdicating and passing the office to his son, Crown Prince Naruhito, and as part of the transition comes a new gengo, or era name: "Reiwa." It's loaded with meaning and subtext, but because of the way text is sent and displayed over the internet, the name can't really be displayed properly. Unicode has issued an update making it possible, but for now there's just no character representing it....