furigana, yomigana
読み仮名
html
How to Write/Add Furigana in HTML? (Answered) - JoyoKanjiKai
Wondering how to display furigana (the little Japanese kana characters displayed above Kanji) in HTML? Here's how to do it... simple! With an example...
https://www.joyokanjikai.com/learning-japanese/how-to-write-furigana-in-html/

word
How to insert furigana when typing Japanese in Microsoft Word
In this video, I show how to insert furigana using the Phonetic Guide and also map the button to a keyboard shortcut so you don't always have to go to the ribbon toolbar with the mouse every time.
https://www.youtube.com/watch?app=desktop&v=MOTUMY-a0kE&t=35

do not supported by unicode
Is it possible to type in Furigana (and Ruby characters) using Unicode?
I am currently making a Corona app where I would like to include Japanese text. For those of you who do not know, it appears that Japanese has multiple languages to write in text (Kanji, Hiragana, ...
https://stackoverflow.com/questions/31009855/is-it-possible-to-type-in-furigana-and-ruby-characters-using-unicode

Seonglae Cho