Im not sure if this type of manga exist but its very similar to "The Demon King who lost his job". Its where instead the hero defeating the demon king, its the opposite. In Demon king who lost his job, the mc (demon king) defeated the fmc (heroine). I would love to read a manga where the demon king (not queen) defeats the heroine (not hero) and slowly corrupts her. Dont question why, maybe because im crazy, but something like that please.