Install ruby-romkan by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-romkan
Description:
Romaji <-> Kana conversion library for Ruby
Ruby/Romkan is a Romaji <-> Kana conversion library for Ruby. It can convert a Japanese Romaji string to a Japanese Kana string or vice versa.
Homepage: http://0xcc.net/ruby-romkan/
Version: 0.4.0-2
Section: universe/ruby