Install xfonts-ayu by entering the following commands in the terminal:
sudo apt update sudo apt install xfonts-ayu
Description:
Gothic 18/20 dot Japanese and ISO-8859-1 X11 bitmap fonts
This package includes Japanese (jisx0208.1990, jisx0201.1976) and ISO-8859-1 bitmap fonts for X Window System with Ayu gothic 18 dot, Ayu gothic 20 dot and Ayu mincho 18x18 dot fonts.
Homepage: http://x-tt.osdn.jp/ayu.html
Version: 1:1.7a-7
Section: universe/x11