Any success with Yomichan or Anki?
For Anki simulating WaniKani experience, the settings would be
- Type-in box
{{type:Field}}
- Steps in minutes: 1 10 240 480 1440 4320
To learn more about Anki+WaniKani, see https://community.wanikani.com/t/AnkiWaniKani/7636, [Anki Deck Template] WK Anki, Crihak's Flavor
To create a vocabulary deck, I haven’t tried Yomichan, but I use simply
Vocab list (separated by ',') generator -- add reading and meaning
And I can throw a spreadsheet into Anki.
To extract vocabularies from a paragraph/website, you might try WWWJDIC: Text/Word Translation (WWWJDIC Text glossing).