From https://www.tofugu.com/japanese/wa-and-ga/

If you take this block and hover the　食べたい then it only detects the kanji without the rest of the word.

The hiragana are a couple levels up from the kanji so it might be tricky.

<li>
  <i></i>
  <ruby>
    <span lang="ja">絶対</span><rp><span lang="ja">（</span></rp><rt><span lang="ja">ぜったい</span></rt><rp><span lang="ja">）</span></rp>
 

User suggestion. Would first need to evaluate whether this would infringe on someone's copyright (it probably would, but not sure)