This is a completed sequel with 13 Chapters (2 Volumes). The next chapter is on the spin-off (Chapter 10) but please do read it from the first chapter because it tells the story before they went to save the children.
https://www.mangago.zone/read-manga/the_most_heretical_last_boss_queen_who_will_become_the_source_of_tragedy_will_devote_herself_for_the_sake_of_the_people_comic_anthology/
Thank you for thisss
i hope this one is a good guy bro he's fine shyt