In Japan, most traditional names have characters, known as kanji, whose meanings represent what parents hope their child will become. (For instance, Hikari, a girl's name, is written with a character meaning "light.") Each character — parents can choose from among 2,999 under the law — has a pronunciation generally associated with it, and those sounds together make up the reading of the name. Here's the catch: Most kanji have additional possible pronunciations, a quirk related to Japan's adoption of the Chinese writing system more than 1,500 years ago. That can give parents an opening to derive an unusual pronunciation from the sequence of characters that make up a name, with an intended reading that no one could know just from looking at the characters — the issue with Mr Matsumoto's name.