Install jvim-canna by entering the following commands in the terminal:
sudo apt update sudo apt install jvim-canna
Description:
Japanized VIM (Canna version)
JVIM 3.0 is Japanized VIM (VI clone editor) by K.Tsuchida
Homepage: http://hp.vector.co.jp/authors/VA003457/vim/
Version: 3.0-2.1b-3build2
Section: universe/editors