Install canna by entering the following commands in the terminal:
sudo apt update sudo apt install canna
input system for Japanese - server and dictionary
Canna provides a unified user interface for Japanese input. It is based on a client-server model and supports automatic kana-to-kanji conversion. . It supports multiple clients (including kinput2 and canuum), and allows them all to work in the same way, sharing customization files, romaji-to-kana conversion rules and conversion dictionaries. . This package provides the Canna server program and dictionary files.