latex-cjk-japanese 4.8.4+git20170127-3 (riscv64 binary) in ubuntu jammy

 CJK is a macro package for LaTeX. This package gives you the possibility
 to include Japanese text in your (La)TeX documents. Install
 latex-cjk-japanese-wadalab for pretty printing.
 .
 Install hbf-kanji48 if you want to use bitmap fonts in your documents.
 .
 Have a look at latex-cjk-common for a more detailed description.