https://www.novelupdates.com/series/the-most-heretical-last-boss-queen-who-will-become-the-source-of-tragedy-will-devote-herself-for-the-sake-of-the-people/
Novel raw: https://ncode.syosetu.com/n0692es/
https://www.novelupdates.com/series/the-most-heretical-last-boss-queen-who-will-become-the-source-of-tragedy-will-devote-herself-for-the-sake-of-the-people/