Font Book fonts missing
I am working on a macbookpro OS 12.2.1.
I live in Japan and work in both English and Japanese. To that end I use both Western and Japanese fonts. The Japanese fonts typically have names written in Japanese. When I look in my Font Book, however, all the names are written in roman letters. There are no "international" font names at all.
All of my softwares (Word, Excel, Mail, Illustrator, etc) can use all the Japanese fonts in my computer, but Font Book does not show those fonts.
How can it be that there are fonts in my computer that I use all the time, which do not show up in Font Book?
MacBook Pro 13″, macOS 12.2