Around one year ago I started learning Japanese. Until now I procrastinated writing kanji with vim. Finally the time has come to solve the issue.
First you need to install tyru/eskk.vim plugin with your preferred vim plugin manager. With vim-plug you need to add the following code to your vimrc.
call plug#begin()
Plug 'tyru/eskk.vim'
call plug#end()
After install (:PlugInstall) you already have hiragana and katakana
but kanji support is still missing. You can start using kana in
insert mode after <C-j> and switching between katakana and hiragana
with <q>. For kanji support you still need a dictionary.
Fortunately skk-jisyo-20201101 is available as a package.
pkg_add skk-jisyo-20201101
There’s only one last step to solve. Find out how to use hiragana to
kanji translation with eskk. In hiragana mode type in ;いぬ<space>.
The result should be: 犬
仮名 と 漢字 を 畫くこと が できます。