anthy software package provides input method for Japanese - backend, dictionary and utility, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install anthy
anthy is installed in your system.
Make ensure the anthy package were installed using the commands given below,
$ sudo dpkg-query -l | grep anthy *
You will get with anthy package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Utilities |
| Package | anthy |
| Version | 9100h-25+b1 [mips, mipsel], 91 |
| Description | input method for Japanese - backend, dictionary and utility |
| Sub Section | Utils |