If you want to do the same, here is the howto file that I just saved:
howto
Sources:
deDRM kindle file:
https://www.youtube.com/watch?v=v7rfGoINXyM
remove furigana: How to remove furigana when importing .epub files - 日本語フォーラム (Open Forum in Japanese) - LingQ Language Forums
jpdb.io handling (create, export, import):
あなたも殺人犯になれる! ❗ (Intermediate Book Club) [completed] - #39 by Akashelia
open calibre app (with plugins for kfx and DeDRM - exact versions as given in the youtube video above)
connect kindle
add file to calibre
convert to EPUB with replacing the following regular expressions by nothing:
<rt>[^<]*</rt>
<rp>[^<]*</rp>
convert EPUB to TXT
save TXT
open jpdb.io (with addon jpdb-export) / learn
new deck from text
copy text without table of contents
generate deck
export deck
share on google drive
import in jpdb.io:
copy text file
paste in ‘new deck from text’